A SpaceX Falcon 9 rocket carrying research and supplies to the International Space Station exploded shortly after lifting off from Cape Canaveral AFS, Fla., on Sunday, according to NASA and company officials. SpaceX President and Chief Operating Officer Gwynne Shotwell...

Although the United States is committed to reducing its nuclear arsenal to meet New START obligations, maintaining a “strong nuclear deterrent” remains “critical” to national security, said Deputy Defense Secretary Bob Work. Speaking before the House Armed Services Committee on...

If the United States continues to delay expensive modernization programs to its aging nuclear systems, it will lose deterrent capability as early as the 2020s, Deputy Defense Secretary Bob Work told members of the House Armed Services Committee on June...

The Air Force hasn’t fully assessed the cost savings associated with divesting the A-10 fleet, according to a Government Accountability Office report, released June 25. The report also states that divesting the Warthog fleet “will create” gaps in the close...

Top Air Force space officials on June 26 reaffirmed their support for developing US commercial replacements for the Russian-made RD-180 rocket engine to launch crucial national security payloads. But, during testimony before the House Armed Services Committee’s strategic forces panel,...

The effort to develop a US alternative to the Russian-made RD-180 engine to provide assured access to space appears to be clouded by sharp differences among Air Force officials, space industry leaders, and a key lawmaker. In a Friday hearing...