Hostages

Another question (the last one has elicited a grand total of zero responses, so my hopes are not high): Have there been an any American soldiers captured and held hostage during the Afghanistan and/or Iraq Wars? I don't know the answer, do you?

UPDATE: Thanks to Vicki in comments who reports there have been hostages, however in limited numbers. With all the fighting and deaths in the last five years, the low number of hostages is certainly a testament to the military's ethos of leaving no man behind.