Neel Mehta 
Brendan Callahan serves as vice president and leader of MTSI’s national security division, where he oversees the development of the company’s national defense business.
Callahan joined the company in 1996 as the co-lead of the applied visualization technologies group and led the development of analysis and research tools.
He handles MTSI’s program for the delivery of keyless signature infrastructure to U.S. federal agencies market in partnership with Guardtime.
Brendan holds a bachelor’s degree in aerospace engineering from Virginia Tech.