dangerous drug lord, he and his colleagues colleagues had merit to the search to one block radius in culiacán, mexico. a town deep inside enemy territory. now, a team of mexican marines and the u.s. agents was on the ground to. determined to strike before he could escape again. here again is lester holt inside the hunt for el chapo. >> february 16th, 2014. as drew was waiting at a military base, 150 miles away mexican of the u.s. team had gathered the hornets nest of culiacán. it's search of narco king pin el chapo guzman. they've been on the ground, exposed for 24 hours, and still hadn't located the executive house was el chapo hold up a. >> i got a call from the ground team and they said look, this isn't working. everyone's tired. hungry, we're exhausted. >> time was running out.