 Let's go to audio 12 regarding this new information about a local police officer confronting the shooter. We do have remarkable new reporting here tonight emerging about the critical few moments just before that shooting started. A law enforcement officer now telling ABC News that a local police officer was on the roof of that building and actually confronted the shooter just seconds before he opened fire on the former president. It's believed the officer then fell when the shooter turned to him and aimed his weapon at the officer.