As the scope of their investigation grew, Walp and Doran began to worry that the thefts could represent a true threat to the security of the country.”We were up to our neck in possible espionage,” says Walp. “My greatest fear was that the nuclear secrets of the United States of America would walk out the front door of the lab, right into the hands of our enemies.”The pair began to develop confidential sources and hide documents related to their investigation so they wouldn’t disappear from the lab. Suddenly, they were fired and their investigation was shut down, with little explanation why.”They were sweeping all of these different thefts and incidents under the rug,” says Doran.Despite this setback, the pair refused to back down.”The stealing’s going to go on. The jeopardy of the national secrets is going to go on,” says Walp. “So quite frankly, almost in a nanosecond, we said, ‘No, we’ll fight.'”But that fight took its toll.”I was followed on multiple occasions,” says Doran. “I started carrying a gun everywhere I went.””I feared for my family,” says Walp.