battaglia's that was telling him the judge was the intended target. but he couldn't be sure. >> because mark also was a defense attorney had probably made -- possibly some enemies over the years. >> he called in the cavalry. >> fbi, atf, state police, county prosecutors, u.s. marshals, u.s. attorney's office, our agency. >> this was serious? >> it was a large operation, yes. >> the largest police operation he'd ever been a part of. and there were all worried about the same thing. would the shooter straight strike again? the clock was ticking. coming up -- >> i knew it was bad because i kept asking, how is my son, who was my son? somebody tell me something and nobody was seeing anything. >> for judge salas, pure agony. >> i remember just screaming, screaming. >> while investigators turn to her husband for what could be critical clues. >> he could actually speak, but he was able to tap out certain words to talk about what he saw. >> when "dateline" continues. there can be some not-so-pretty stuff going on, on the inside. it's true, if you have diabetes,