They are here this weekend at Wiley Post, B-17 flew in first and just now the B-24, both distinct engine sounds, have goose bumps. Have been up in the B-17 but not the B-24 or P51.
http://www.collingsfoundation.org/cf_schedule-wof.htm
http://www.collingsfoundation.org/cf_schedule-wof.htm