11.   Investigators have speculated if the canisters were full, chemicals inside them could have heated and caused a fire.

12.   Investigators now believe that the canisters may have been full and consider them a leading suspect in the crash.

13.   On Thursday night, he said that tests by the Department of Defense had found that the canister was empty.

14.   Quinn said his company was now investigating whether the canisters were still full.

15.   So, how big are these canisters again?

16.   The canisters were to be placed in the water off the Gaza Strip, Israeli officials said, probably for retrieval by Palestinians posing as fishermen.

17.   The canisters will be stored in a building where Nuclear Fuel Services used to chop up nuclear fuel.

18.   The canisters on Mir are similar to the equipment used to charge the emergency oxygen systems on airliners.

19.   The pipe is attached to a metal cylinder in which a chemical cartridge or tear gas canister is loaded.

20.   The steps leading to the forward cargo hold, where the canisters were stored, were scorched, federal investigators said.