A gunman jumped out from behind a parked car and ambushed four young men in Queens early Sunday - killing a recent high school graduate and wounding the others.Clad in a black hoodie and armed with a .40-caliber pistol, the gunman set his deathtrap near the intersection of 113th Ave. and 157th St. in Jamaica, police sources said."It was a major shootout," said Brandi Johnson, 23, who was on her porch nearby and saw the gun's muzzle flashing as the...
