California State University San Marcos will host a 9/11 stair climb on Sunday, Sept. 13, in partnership with the Wounded Warrior Project. Participants will climb 2,071 steps to honor first responders who ascended the Twin Towers during the 2001 terrorist attacks. The free event begins at 8:30 a.m. a t Campus Way Circle, with morning registration opening at 7:45 a.m. ...read more read less