Helicopters have been dropping canisters containing notes that urge departure.
As the South Vietnamese Skyraider plane grew fatter and louder, it swooped down toward her, dropping canisters like tumbling eggs flipping end over end.
He worked on developing and deploying spy planes like the U-2, the Lockheed A-12 and the SR71 Blackbird, and several generations of Corona reconnaissance satellites, which dropped film canisters that were then snapped up in midflight by aircraft.
On March 16 , 1988 waves of Iraqi warplanes dropped gas canisters in this Kurdish village of roughly 50,000 people, bathing neighborhoods in what is believed to have been a misty cocktail of nerve and blister agents -- sarin, tabun, mustard, VX -- and perhaps the biological agent aflatoxin as well.
They dropped "Bangometer" canisters to measure the force of the blast, but this was not used to calculate the yield at the time.
The liquid "burst into flames and quickly spread after he dropped the canister," a police official said.
In 2007, Moscow symbolically dropped a canister containing a Russian flag on the Arctic Ocean floor from a submarine at the North Pole.
On other missions they acted as pathfinders for No. 1 Squadron, dropping smoke canisters on suspected communist hideouts that the Lincolns following above and behind would attempt to bomb.
More than a decade after Saddam Hussein's warplanes dropped poison gas canisters here, killing perhaps 5,000 people in one of the worst such attacks since World War I, this city was still struggling to get back on its feet.
"This is called the tube area," she explained, dropping a canister into the pneumatic black hole, which carries each encapsulated request to the reading room.
