The arrival of Russian fighters in Syria will bolster the capabilities of Libyan National Army forces and escalate an already tense Libyan civil war.

Anniversaries are for taking stock, so the 10th anniversary of the Boeing X-51A’s first flight on May 26 is a good time to inspect the finances of the experimental scramjet-powered vehicle’s successor. 

The U.S. Air Force’s top general in Africa Command warned on May 26 that Russia’s next move in Libya could be to deploy permanent, long-range air defense systems. 

The UK has begun firing trials of Thales Lightweight Multirole Missile (LMM) from the Leonardo AW159 Wildcat naval helicopter.

The National Telecommunications and Information Administration has petitioned the Federal Communications Commission to reconsider its controversial order granting Ligado Networks access to radio frequency spectrum for a ground-based 5G network near the GPS allocation.

The U.S. Air Force, in the midst of modernizing its bomber fleet, launched a competition on May 19 for 608 engines to keep the B-52 Stratofortress in business beyond 2030. Aviation Week editors Jen DiMascio, Steve Trimble and Guy Norris discuss the competition and what's driving the global resurgence in platforms with firepower.

Two of the U.S. Defense Department’s most advanced hypersonic programs have fallen months behind schedule, the head of the Pentagon’s Research and Engineering branch confirmed on May 20. 

The U.S. Air Force will develop an operational hypersonic cruise missile using rapid prototyping procedures, a top acquisition official says.