Def Leppard have announced a headlining North American tour. Bret Michaels (Poison), The Struts, Extreme, etc. will join the band on select dates. Tour Dates: 05/15 San Juan, PR – Coliseo de Puerto Rico 05/17 Ocean City, MD – Boardwalk Rock 06/19 Milwaukee, WI – Summerfest (feat. Tesla) 06/21 Thackerville, OK – Lucas Oil Live…