dr. rebecca grant. she worked for the rand corporation. she's presently the director of the general billy mitchell institute for air power studies, which is an air force association non-profit dedicated to studying all forms of air power. as well, she's president of iris independent research. then we'll hear from mackenzie egland. she served in the office of secretary of defense and joint staff. then she served as a research fellow over national security at the heritage foundation as well as a staff member on the 2010 defense review independent panel. she's currently a fellow in the maryland wear center for security at the american enterprise institute. finally, we're welcoming back to brookings tom davis, who is notably a former brookings federal executive fellow. behind that, a graduate of the u.s. military academy, has a masters in international security economics from harvard. he was a program analyst for the army, military assistant to the secretary of the army. he also commanded in the third gulf war as well as an assistant professor