the FBI likely doesn't want to tip how many of these cells are in the US, and under 24 hour surveillance all the time.
"the FBI likely doesn't want to tip how many of these cells are in the US, and under 24 hour surveillance all the time." I hope so but, if they are under such close scruitny, how did Mayfield's fingerprint get onto artefacts in Madrid...and, no-one was tipped about Madrid? (Doesn't sound/look close enough)