The Air Force may have inadvertently revealed the size of the secret B-21 bomber with the release of an image of a temporary shelter for the airplane. The service is evaluating several designs for temporary shelters for everyday use and deployment to temporary operating locations. If the B-21 fully fits within the shelter's footprint, it has a wingspan of about 140 feet.

U.S. officials are trying to hash out the ground rules for extraterrestrial combat more than a year after standing up a Space Force to fend off threats on orbit. There’s no one-size-fits-all answer for what actions by a satellite could be considered an act of war. Proportional response in a war that extends to space will depend on a broader context than earlier conflicts where the U.S. might respond to a barrage of rockets with its own airstrike, the Space Force’s top general said March 3. “I think it depends on the strategic context that's going on in the world,” Chief of Space Operations Gen. John W. “Jay” Raymond said during an event hosted by the National Press Club.

The Government Accountability Office recently turned down a protest by California-based Anduril Industries, which challenged how the Air Force is running aspects of its Advanced Battle Management System acquisition. Anduril filed the protest in November to push back on a solicitation for contractors to participate in ABMS that it felt restricted competition. In its Feb. 22 decision to deny the protest, GAO sided with the Air Force and said the requirement for battlefield node support is “logically connected” with the broad scope of work in the program's secure processing field.

About 10 rockets struck Al-Asad Air Base, Iraq, on the morning of March 3, just over a year after Iranian ballistic missiles ravaged the installation and left more than a hundred U.S. troops with traumatic brain injuries, the Pentagon confirmed. An American contractor suffered “a cardiac episode while sheltering” and died. There are no other reports of injuries, the Pentagon said. Iraqi security forces are playing point on the investigation, said Combined Joint Task Force-Operation Inherent Resolve spokesperson Col. Wayne Marotto. No group has yet claimed responsibility for the attack.

On March 23, the Air Force Association's Mitchell Institute for Aerospace Studies will host a virtual Nuclear Deterrence Series event featuring Scowcroft Group Principal Frank Miller. At a time when nuclear modernization programs are accelerating around the world, proposals to recapitalize the U.S. nuclear arsenal are at the forefront of debates over defense spending. Miller will share his insights into the prospects for U.S. nuclear modernization programs and the value of nuclear deterrence in today's competitive security environment. The think tank will post event video on its website and YouTube page after the live event.