Original sentence: Greer supports 'free and open' Congressional hearings on UFOs, 'extraterrestrial visitation', and other aspects of the alleged conspiracy
Edited sentence: Greer, along with people from either a military or government background, has given numerous speeches and interviews at ufology conferences and other venues, attempting to muster support for 'free and open' Congressional hearings on UFOs, 'extraterrestrial visitation', and other aspects of the alleged conspiracy