The United States Space Development Agency (SDA), in support of the U.S. Space Force, has awarded contracts to L3Harris Technologies and Sierra Space Corporation to build and deliver 36 Accelerated Missile Defense Tranche 3 (AMDT3) space vehicles (SVs) designed to operate in four distinct orbital planes.

Part of the Tracking Layer for Tranche 3 of the Proliferated Warfighter Space Architecture (PWSA), the space vehicles will support the White House’s space-based segment ‘Golden Dome for America’ antimissile defense system to expand the country’s missile tracking and defense network, with a projected delivery date of 2028.

36 Space Vehicles Orbiting in Four Separate Planes Will Aid Missile Defense

According to a statement announcing the awards, the 36 space vehicles will operate across four separate orbital planes. Half of the vehicles covering two of the four orbital planes will be made by Sierra Space Corporation. The statement from the SDA describes the vehicles as “missile warning/missile tracking” SVs loaded with specialized sensor packages. An official at the SDA speaking on background told The Debrief that the details of the sensor technologies and capabilities are not available at this time.

The second half of the vehicle order covering the other two orbital planes will be made by defense technology company L3Harris Technologies. Their award calls for 18 Hypersonic and Ballistic Tracking Space Sensor (HBTSS)-like missile defense variant SVs.

When The Debrief asked the SDA for clarification on the term “variant” space vehicles, the official explained that this designation represents the different types of sensor packages that each company will provide. For the L3Harris award, the SDA explained that their sensor is an advancement on earlier work performed with the Missile Defense Agency under the Hypersonic and Ballistic Tracking Space Sensor (HBTSS) program.

Infrared Sensors Will Integrate with a Low-Latency Communication Network

When discussing the significance of the twin awards, the SDA said their deployment will expand the company’s missile defense sensing established in previous phases “in support of homeland defense and theater defense.”

“Each AMDT3 SV will be interoperable with all SDA Tranche 1, Tranche 2, and Tranche 3 SVs and will operate in an integrated fashion through a common ground system,” the statement explained.

They also note that the tracking layer is equipped with infrared sensors “that will integrate with a low-latency communication network.”

“With these awards, SDA is accelerating the deployment of the Tracking Layer to provide the homeland, our deployed forces, and allies with global, persistent indications, detection, identification, warning, tracking, and defense against advanced and evolving missile threats,” explained G.P. Sandhoo, Space Force Portfolio acquisition executive for Missile Warning and Tracking and SDA director. “AMDT3 expands upon SDA’s previous and current Tracking Layer generations — Tranches 1, 2 and 3 — marking another milestone in delivering a resilient, global missile warning, missile tracking, and missile defense capability.”

Future Satellites Will Offer Even Greater Capability to the Warfighter

Although a specific delivery date for each of the company’s separate awards was not made public, the announcement did say they are expected to be available for launch “by the end of 2028.” Once aloft and in their respective orbital planes, the missile tracking and defense space vehicles will be operated and maintained by the U.S. Space Force.

When asked by The Debrief if there are any plans to add capabilities beyond detection and tracking to the multi-layer system in the future, the SDA said future improvements are one of the main pillars of the organization’s business model.

“We use spiral development to deliver new generations of satellites (we call them “tranches”) every few years,” the SDA explained. “Each new tranche represents an enhancement over the previous and offers greater capability to the warfighter, either through additional sensing coverage, or through technology advances (or potentially both).” 

Christopher Plain is a Science Fiction and Fantasy novelist and has spent the last six years as Associate News Editor and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him at christopher@thedebrief.org

ChatGPT Health is returning with substantially wider access, giving more iPhone users the option to connect information from Apple Health directly to the AI assistant.

The expansion follows a limited test introduced in January. OpenAI is now gradually making the dedicated Health experience available to eligible ChatGPT Free, Go, Plus and Pro users in the United States who are at least 18 years old.

Despite the close Apple connection, this is not a feature created by Apple or built directly into the Health app. OpenAI operates the service through ChatGPT, while Apple Health serves as one of the sources users can voluntarily connect.

Once permission is granted, ChatGPT can examine selected health and fitness information stored on iPhone, including activity, sleep, workouts and other measurements collected by compatible apps and devices. Users can then ask questions about changes over time without manually exporting records or uploading screenshots during every conversation.

ChatGPT Health Reaches More iPhone Users

ChatGPT Health originally appeared as a limited early-access experience for a small group of testers. The expanded rollout replaces that narrow availability with support for eligible adult users across the United States, although OpenAI says access may take several weeks to reach every account.

The feature works on the ChatGPT website and iOS app, but connecting Apple Health requires an iPhone. Users also need a recent version of the ChatGPT app before the Health option appears in the sidebar or More menu.

Apple Health is only one part of the system. ChatGPT can also connect to supported medical-record portals, One Medical and Function Health. Bringing those sources together allows the assistant to answer questions using a broader personal context than activity data alone.

A user could ask how sleep duration has changed across several weeks, whether workout frequency declined after a schedule change or how recent laboratory results compare with earlier tests. ChatGPT can also help organize questions before a medical appointment or summarize changes found across connected records.

Information from third-party fitness services can reach ChatGPT through Apple Health when those apps already share their data with the iPhone database. That may include measurements from platforms such as Garmin, Oura, Whoop, Strava and MyFitnessPal, depending on which categories each service makes available.

Not every proprietary score transfers. An app may calculate its own readiness, recovery or sleep score without writing that exact result into Apple Health. ChatGPT can only use the information made available through the connected source and approved by the user.

After synchronization, health information can inform responses throughout ChatGPT rather than remaining limited to conversations opened from the Health tab. The assistant normally asks for permission before using connected information, and users can also add “@Health” to a prompt when they specifically want a response based on their records.

Apple Health Data Gains a Conversational Layer

The appeal of the integration comes from turning a large collection of measurements into questions expressed in ordinary language.

Apple Health can already organize trends, highlights, medications, laboratory results and activity records. ChatGPT adds a conversational layer capable of comparing those categories or explaining them in a more personalized format.

Someone preparing for an annual physical could ask for a summary of meaningful changes since the previous appointment. A runner might request a comparison between training volume, sleep and resting heart rate. Another user could ask which information deserves discussion with a clinician after receiving new laboratory results.

That does not make ChatGPT a doctor. OpenAI says the feature is intended to support medical care rather than diagnose conditions or recommend treatment. Urgent symptoms and emergencies still require professional assistance.

The distinction is especially important because health data can appear more conclusive than it is. A change in heart rate, sleep or activity may have several explanations that cannot be determined from an iPhone record alone. Wearables can identify patterns, but they do not automatically reveal the medical cause behind them.

ChatGPT may help users notice relationships and prepare better questions. It should not be treated as the final authority on whether a symptom is harmless, whether medication should change or whether professional care is unnecessary.

The service is also read-only. ChatGPT can examine approved Apple Health information but cannot alter the original records stored on iPhone. It cannot add a diagnosis, change a medication list or write new measurements back into the Health app.

Users retain control over which Apple Health categories are shared. Someone may allow access to steps, workouts and sleep while withholding reproductive health, medications or other sensitive information.

That selective approach may be more appropriate than approving every category simply because the option is available. A useful response does not always require a complete health history.

Privacy Becomes the Central Decision

Connecting Apple Health to ChatGPT creates a different privacy relationship from using health features entirely within the Apple ecosystem.

Apple designs the Health app around on-device protections and user-controlled permissions. ChatGPT Health requires selected information to synchronize with OpenAI systems so the company can analyze it and generate personalized responses.

OpenAI says connected Apple Health data, medical records and conversations using that information are not used to train its foundation models or target advertising. The company also applies additional encryption and isolation protections to health information.

Users can disconnect Apple Health at any time. OpenAI says synchronized data from the disconnected source will be deleted from its systems within 30 days.

Previous conversations are handled separately. Information already included in ChatGPT conversation history remains until those chats are deleted, even after the Apple Health connection is removed.

Memory introduces another consideration. Conversations using Health can create memories when ChatGPT memory is enabled, although OpenAI says memories are not generated directly from synchronized health data. Temporary Chat or separate project memory can reduce how much personal context continues across future conversations.

The new Health experience should also not be confused with the existing ChatGPT integration inside Apple Intelligence. Siri and Writing Tools can use ChatGPT for certain requests without requiring the dedicated ChatGPT app or a connected account.

ChatGPT Health is a separate OpenAI service with its own account, permissions, privacy controls and health-data connections. Using ChatGPT through Siri does not automatically give OpenAI access to Apple Health.

That separation gives users a meaningful choice. They can continue keeping health information inside Apple apps, share only selected categories with ChatGPT or connect medical records for a more comprehensive view.

The expanded rollout makes one of the most personal databases on iPhone available to conversational AI. Its usefulness will depend not only on the quality of the answers, but also on whether users understand exactly which information they are sharing and where it goes after leaving the device.

The post ChatGPT Health Expands Apple Health Access appeared first on AppleMagazine.

I dispense what might be called valuable insight to my friends, as well as in this public forum. My friends know the danger: they might become the topic of a column, which is true for my buddy Jeff, who left a bag containing his passport behind at a hotel. Fortunately, he had an AirTag in his bag. That was, however, just the beginning of the journey. (Jeff gave me permission to share his story.)¹

To avoid suspense, I’ll tell you that Jeff doesn’t have his bag back, but will soon.

Grate news

Jeff was out of town on business for a few days—he’s one of those nearly extinct creatures called a “full-time technology reporter“—and was carrying his passport to Texas not because it’s another country (it hasn’t seceded yet), but because he lacks a Real ID-upgraded driver’s license. He had a small bag with a few items, including the passport and an AirTag, that he didn’t need to carry, so he used the hotel safe. There have been many articles written about how unsafe hotel safes are, but it feels as if you’re in a decent hotel, it’s still another bar for someone to get through to steal your stuff.

Leaving in a bit of a rush, Jeff didn’t retrieve the bag from the safe. When he realized it wasn’t with him, thousands of miles later, he was peeved. Shouldn’t the “left behind” feature in Find My have alerted him? Find My showed the bag’s location, however. For some reason, it appeared as if it were in the hotel parking lot. I catastrophized with him, assuming it was stolen. He called the hotel, which said it wasn’t in lost and found.

A staff member went out, looked in the parking lot, and said the rough location was a grate—perhaps the bag had been stolen and someone had found the AirTag and dropped it through the slats? Which would imply that a hotel employee or a thief had managed to get into Jeff’s room after he left, open the safe, leave the hotel, and rummage through the bag in the parking lot before absconding.

That wasn’t the case (or valise). The hotel called back the next day. The previous staffer didn’t know, for some reason, that valuable left-behind items were tagged and placed in a safe in the basement, presumably below or near the parking lot. His bag, containing his passport and other items, would be sent back to him.

Jeff’s experience reveals several aspects of the Find My tracking system that you can take advantage of in advance or use if you’ve lost something or left it behind.

Don’t leave me!

Every device and item you have can be set to alert you when you “leave it behind.” I believe this setting is enabled by default, though Apple’s documentation isn’t clear on this point. All of my devices and items have it enabled, and Jeff found it was turned on for all his gear. Here’s how to check:

1. In a native Find My app, select the device (like a Mac) or an item (an AirTag or other Find My network item) in the list of such things.
2. On an iPhone, iPad, or Apple Watch, the action sheet appears. On a Mac, click the info (i) icon next to the item’s name on the map. In the upcoming version 27 operating system releases on all platforms, tap or click the More (…) button that appears when you select the device from the list.
3. Tap or click Notify When Left Behind, which should already show On. (In the 27 releases, tap or click When Left Behind.)
4. If disabled, turn it on.

Here’s a crucial detail: examine the “Notify me, except at” list. You can manually add to this set of locations (tap or click New Location). However, it primarily grows when you’re notified by an item or device being left behind, and then you tap or click in the notification to ignore it at that location. You are presented with the option to just exclude that item or device from that location or all of your equipment.

It’s very easy to approve that exclude-all button. (Jeff did not; his list didn’t include the hotel.) This can be convenient when you’re at a hotel, a friend’s house, or another location for a few days or frequently, and sometimes leave Find My-tracked stuff there. But once you ignore the location, you won’t get notified in the future. You can modify the list by hand, too.

Jeff may instead have been tripped up by the safe acting as a Faraday cage—a metal mesh or box that shields electromagnetic signals from passing through. The AirTag and other Find My items use Bluetooth to broadcast a rotating identifier at regular intervals.² If the safe blocked that signal, Jeff’s iPhone lost contact with the AirTag the moment the bag went in—a few days before he left. With no fresh separation between the phone and the item at departure time, the alert may have lacked the necessary trigger. Jeff was on the verge of sharing the location with the hotel when they found it.

Apple says this takes longer than the few days Jeff was on his trip: “You can see its last known location for up to seven days in the Find My app.” After seven days, the device or item’s location will appear as “No location found” or “Offline.” Jeff could see the item’s location, which made the lack of notification seem like a bug.

Now for the grate part (not great part): once Jeff’s bag was removed from the safe in his former room, it would have been carried through the hotel and detected by every iPhone, iPad, or Mac nearby. When it reached the hotel’s lost-and-found safe, the rough location would likely still be relatively close before it entered that particular Faraday cage. At which point, when Jeff looked at Find My, he saw it at (or under) the parking lot.

Sack attack

The hotel works with a service that handles the return. Jeff paid both a whopping and reasonable $60 to have it sent two-day air back to him. Fair enough! Unfair enough, days after he paid, the bag is still at the hotel (as I write this). Jeff will, of course, follow its progress via Find My.

[Got a question for the column? You can email glenn@sixcolors.com or use /glenn in our subscriber-only Discord community.]