acquisition agile software development Air Force acquisition Air Warfare f-35 joint strike fighter F-35 Sustainment Cost Reduction Initiative Hypersonic Conventional Strike Weapon hypersonics Lockheed Martin Corp Networks / Cyber Will Roper

acquisition air force air force future Ann Stefanek capitol hill China Congress darpa HASC house armed services committee Hypersonic Conventional Strike Weapon hypersonics lethality lockheed martin Michael Griffin missile defense Missiles peer threat pentagon Russia SASC Senate Armed Services Committee Tactical Boost Glide program Third Offset U.S. Air Force