The 30,000-pound guided bomb is designed to penetrate an estimated 200 feet through rock or other hard substances before destroying enemy labs or bunkers.
The destroyer USS Truxtun and the supply ship USNS Supply collided as the warship was getting a load of supplies, leaving two troops with minor injuries.
"No more ‘divest to invest,’” aviation expert Heather Penney said, arguing that the Air Force needs to dramatically boost its F-47 and B-21 acquisition.