Current and former members of Death Angel, Exodus, Slayer, Testament, Forbidden, DRAIN, Heathen, Nevermore, Vain, Sacrilege B.C., Skinlab, and D.R.I. have announced a special benefit show for Dennis Pepa (ex-Death Angel) amid his battle with stage 4 duodenal cancer. The concert will take place at the DNA Lounge in San Francisco, CA on January 24…