SDB Goes Operational: 
Munitions maintenance airmen of the 48th Fighter Wing, RAF Lakenheath, England, have been getting schooled on the Air Force’s newest munition—the Small Diameter Bomb, or GBU-39. The wing will be deploying F-15E fighters equipped with the SDB for the munition’s first operational debut—in Southwest Asia—this fall. TSgt. Corey Hammond, production supervisor for the 48th Munitions Squadron, says the SDB is “a great weapon” for ground crew, noting that they like “the ease of it.” He explained, “It requires less manpower. It requires less maintenance. When you are on the fighting front that’s important.”
Pentagon Cancels $6B GPS Ground System Contract
April 20, 2026
The Pentagon has canceled its contract with RTX to field a ground segment to manage its most capable GPS satellites, a more than 15-year effort beleaguered by software development issues and cost overages.