Alan Peterson, Ph.D, director of the STRONG STAR Consortium and director of the Consortium to Alleviate PTSD., will speak on the topic "It's All About the Blast: PTSD and TBI after Combat Blast Explosions" at 4 p.m., Tuesday, Sept. 23, at the John Peace Library on the University of Texas at San Antonio Main Campus for the first lecture of the UTSA and the University of Texas Health Science Center at San Antonio's joint lecture series supported by the San Antonio Life Science Institute.