The US Air Force has received its first Stand-In Attack Missile, also known as the Stand-in Attack Weapon. The air force is seeking additional companies to produce the missile, which is intended to be compatible with certain aircraft, including the F-47 and B-21. Meanwhile, the navy's plans for a similar radar-busting missile, the AARGM-ER, are uncertain, with reports of a "strategic pause" and consideration of alternatives.