five o'clock
Joe Spain was n't stupid . He was a talker , but he knew when to stop sounding off . The men went back to work shifting the big aluminum barrels from trucks into Building B. Carrying the wooden crates and the paper-wrapped parcels up the ramps and to the side of the building facing the big secret structure labeled A . They worked until five o'clock . Then they filed out and got into the waiting trucks and were hauled back to town ; the boom town that had mushroomed up in the desert overnight and would die with the same swiftness when the project was completed . * * * * * Joe went straight to his rooming house , washed up , put on his good clothes , and found a stool in a nearby restaurant . He ate a leisurely supper , glancing now and again at the clock .