 Why did Miss Jervis think that Don worked for the government?
A National Guard officer volunteered to take a jeep down into the pit, having found a spot that seemed navigable. The Pentagon and the Atomic Energy Commission denied that they had been conducting secret experiments. Don Cort had been dozing in what passed for the club car on the Buckeye Cannonball when the train braked to a stop. Don hesitated, shrugged at the redhead, said, "Excuse me," and followed the conductor. Don made his way up to the locomotive and found a bigger knot of people gathered in front of the cowcatcher. Don saw two men who must have been the engineer and the fireman talking to an old bearded gentleman wearing a civil defense helmet, a topcoat and riding boots.
 Because he was handcuffed to a briefcase.
 Because it seemed as though everyone in the area worked for the government.  His appearance made her think so.  Because he was familiar with Senator Bobby Thebold.  Because he was handcuffed to a briefcase.