March 6, 2018 Three Nellis Air Force Base Airmen display bravery and heroism during the tragic Las Vegas shooting On Oct. 1, 2017, a gunman opened fire on concert-goers attending the 91 Harvest Festival in Las Vegas, Nev., killing 58 and injuring 450 people. Amid the chaos and confusion, three Air Force medics attending the concert leapt into action.