US lawmakers question NASA, Air Force on blast probe led by SpaceX
July 30, 2015 at 21:26 PM EDT
WASHINGTON, July 30 (Reuters) - Fourteen U.S. lawmakers on Thursday told the Air Force and NASA they had "serious concerns" about the fact that SpaceX is leading an investigation into the June 28 explosion of its Falcon 9 rocket, and whether it would receive enough oversight.