Remember how excited military officials in Hawaii were about the fleet of brand new F-22 Raptors? The planes were billed the most advanced fighter jets in the U.S. Air Force, and 20 of them were set to be stationed in the islands.

Raptors are exceptionally fast, remarkably stealthy and more expensive than any other warplane: $150 million apiece. 

But now they’re causing an exceptional headache, amid reports that they are not fit for war. The Raptor program cost $65 billion, and the planes have never seen combat. Right now, it looks like they never will. 

ProPublica has a comprehensive round-up of coverage related to growing concerns about the fleet, which has been grounded since May. Check it out.