Kratos Defense & Security Solutions (KTOS 3.87%), a leading manufacturer of drones for the U.S. military, gained 4.6% through 12:20 p.m. In other words, it builds remotely operated aircraft that deliver supplies to military units in the field. Is Kratos stock a buy? Kratos notes that manufacturing of the Chaparral will begin in 2026, and says Elroy plans to build the aircraft at high volume. Unless profits grow spectacularly over the next few years, Kratos stock will be a sell for me.