attempts to free American citizen John Smith resulted in his death . Edgar Bergen : Successful rescues usually have the benefit of surprise . In the worst case , an earlier rescue effort preempted the possibility of surprise , he says .
Raid to free American photojournalist Luke Somers resulted in his death . Peter Bergen : Successful rescues usually have the benefit of surprise . In the Somers case , an earlier rescue effort preempted the possibility of surprise , he says .