Met one comrade separately. A Chinee engineer given a good look at anything can figure way to make it. Asked this one if he had ever seen a laser gun small enough to carry like a rifle. He had not. Mentioned that passport system made it difficult to smuggle these days. He said thoughtfully that jewels ought not to be hard—and he would be in Luna City next week to see his cousin. I said Uncle Adam would be pleased to hear from him.