It's ba-a-ck! If you lived on the East Coast in 2015, you probably remember the saga of Raytheon's wandering blimp. A few days before Halloween, a Joint Land Attack Cruise Missile Defense Elevated Netted Sensor System (JLENS) air defense aerostat that Raytheon -- now RTX Corporation (RTX 0.14%) -- sold to the military broke loose from its moorings and began floating willy-nilly up and down the countryside before eventually being shot out of the sky by Pennsylvania State Troopers armed with shotguns. It prob ...