Success rate on this sort of operation 'usually very low' - military expertpublished at 09:05 BST 5 April

Retired US Marine Corps Col Brendan Kearney tells the BBC that the success rate on this sort of operation is “usually very, very low”.
Although the airman would have had capabilities to communicate, it is an "electronic nightmare" because "all it takes is for one person to spot him", Kearney says.
“You can’t panic under any circumstances," he adds.
He says some reporting suggests the airman may have had to "move to high ground and stay hidden", calling it a "testament to his training".








