suspicions based on some of her behaviors. >> tonight, a cnn special report. "murder in mexico: what happened at falcon lake." >> reporter: it's late afternoon in mccallen, texas. ♪ ♪ air operations are about to begin. >> there are some areas west of mcallen along the southwest border that are completely out of control, in my opinion. >> reporter: captain stacy holland and his team from the texas department of public safety are trying to stop drug smugglers from crossing from mexico into the u.s. >> right there, right there. one guy's gotten out. one guy's gotten out into that house.