How Turkey Destroyed Its Own Air Force

Fighter pilots aren't cheap. The U.S. Air Force estimates that training a new pilot to fly a plane like the F-35 costs $11 million. And that doesn't count the priceless experience of a veteran pilot who has been flying for years. That's why the U.S. Air Force is willing to offer half-million-dollar bonuses to retain experienced fighter pilots.

The 5 Worst Guns Ever (Colt Made the List, Twice)

Guns are tools meant to address life or death situations, so a poorly designed or manufactured gun often earns particular scorn. The gun world has long memories of particularly bad firearms, many of which sealed the fate of brave soldiers. The rapid pace of firearms development in the nineteenth and twentieth centuries meant that few if any mistakes were repeated, but the memories of these weapons—some with lethal consequences for the owner—linger go on. Here are five of the worst guns ever made.

Chauchat Light Machine Gun

A Russian Cruise-Missile Submarine Holds a Terrifying Record: It Sank Twice

K-429 had not suffered irreparable damage; she was refloated, repaired, and returned to service. Her second life was brief, however; in September 1985, the boat sank at dockside with the loss of one crewmember. The causes of the second sinking remain hazy, but appear unrelated to the first incident. K-429 was again raised, but not returned to sea; for the rest of her career she served as a training hulk. She was scrapped, along with her sisters, in the 1990s.