Though Congress is blocking the reprise of a controversial missile-defense blimp this fiscal year, the Army still hopes to get a second shot at the program come October. At issue is whether lawmakers will allow the service to finish a demonstration of the Joint Land Attack Cruise Missile Defense Elevated Netted Sensor System, a two-blimp setup meant to observe the Washington region's airspace for cruise-missile threats. One of the blimps experienced a catastrophic crash when it broke loose from its...