The Federal Aviation Administration is weeks, if not days, away from releasing a draft rule on the safe integration of small unmanned aircraft into the national airspace system. Speaking at a conference in Maryland last week, the manager of the FAA's small airplane directorate, Earl Lawrence, said he expects the notice of proposed rulemaking to be published “at any time” before the calendar year's end. The final rule -- once reviewed, revised and adopted -- would regulate the certification and...