Anduril, Castelion, Lockheed Martin, RTX and Mach Industries each received Other Transaction Authority (OTA) agreements to build prototype missiles, the service announced Tuesday. The Increment 4 missile is intended to hit moving maritime and land targets at ranges of at least 1,000 km (621 miles) — roughly double the range of the Army’s PrSM baseline. https://breakingdefense.com/2026/09/army-taps-5-companies-for-prsm-inc-4-prototypes/