Jack and the MIT Rad Lab

Radiation Lab MIT [I believe this to be an open source photograph]

Jack spent at least a year during the war taking classes at Harvard.  He was also associated with the Rad Lab at MIT.  Here's a description of the Rad Lab.  "During the war, large scale research at the RadLab was devoted to the rapid development of microwave radar. Projects included physical electronics, microwave physics, electromagnetic properties of matter, and microwave communication principles. The "RadLab" designed almost half of the radar deployed in World War II, created over 100 different radar systems, and constructed $1.5 billion worth of radar. At the height of its activities, the RadLab employed nearly 4,000 people working on several continents. What began as a British-American effort to make microwave radar work, evolved into a centralized laboratory committed to understanding the theories behind experimental radar while solving its engineering problems."  This is from the Research Library of Electronics MIT website