Shawna Sinnott &#039;10 (left) and Olivia Volkoff &#039;10 are two of many Harvard alumni who are serving in the Army, Navy, or Marines. Volkoff, now an engineer at Naval Reactors headquarters in Washington, D.C., says “It’s hard to believe it’s already been a year” since her graduation. Sinnott credits her special concentration &quot;Understanding Terrorism&quot; for her success: “Nowhere else would I have been able to create such an interdisciplinary concentration, learning from experts in every academic field.&quot;