A second pilot has died following a midair helicopter collision in New Jersey — as a witness revealed the harrowing moment she tried to keep him alive after the choppers crashed in her backyard. The two pilots — named as longtime pals Kenneth Kirsch, 65, and Michael Greenberg, 71 — collided at around 11:25 a.m. Sunday in Hammonton, NJ, around 35 miles southeast of Philadelphia. Kirsch, of Carney's Point, died Monday after being flown to a nearby hospital. Greenberg, of Sewell, died at the crash scene Sunday, Hammonton Police Chief Kevin Friel said...