Machine Head have recruited Havok‘s Reece Alan Scruggs to play guitar on their current U.S. tour. He is filling in for Waclaw “Vogg” Kieltyka, who is siting out the trek due to his commitments to Decapitated. Fan-filmed footage of the band performing a cover of Slayer’s “Raining Blood” with Scruggs in Fresno, CA can be…