Marcus Luttrell, a former Navy SEAL and author of The New York Times best-selling book "Lone Survivor," will speak at the on Wednesday, Sept. 10, at 7 p.m. in Macky Auditorium. Student tickets for the talk, which is sponsored by the Cultural Events Board , are free and will be available in the UMC starting Sept. 2, from 10 a.m. - 2 p.m. Community tickets are $5 and are available now at macky.colorado.edu .