"Then I will confine my remarks to what I came here for," Tekla said. This produced an immediate exchange of glances between Julia and Spencer. Tekla ignored it. "For security reasons it is imperative that we have accurate census of which person is in which arklet. Some people like to move around. To trade places. We understand. Fine. But safety and security problems are created when, for example, arklet is struck by bolide, air is leaking, we do not know how many people are in it, their medical requirements, et cetera. Small person needs less air than big person."