be gone. >> he could run? >> he could run. >> reporter: the agents decided to go ahead with the sting anyway. >> the adrenaline was pumpin'. we were keepin' our eyes out -- hoping to spot him. and -- and hoping that everything went smoothly. >> reporter: ncis enlisted the help of local law enforcement. ten officers and agents had the hospital covered. >> we had plain clothes officers just walking around the hospital as just normal patrons and we had -- officers and agents all around the hospital in -- in vehicles, just staged locations, exit points, entry points -- to make sure we cover our bases -- with derek so he doesn't escape. >> did you feel like this was your moment? you were finally gonna catch derek alldred? >> i felt that if we didn't catch him now -- we weren't sure if we were ever gonna catch him. >> reporter: the pick up time was fast approaching. derek sent a text to tracey. >> there was a problem. >> best laid plans don't always work the way they're supposed to to? >> they don't. >> reporter: tracey has bad news for law enforcement. >> was she frantic?