Accidents like the Concorde need not happen. What was seen to be foreign object debris on the runway was ingested into the engine. In this case a tire but in other cases birds, bolts, debris, chunks, tumbleweed, whatever. Proposal is for a fully automated wartime or peacetime machine to sweep and magnetically pick up all items on runways. Take the tedium out and have a regularly scheduled sweep to keep area preventive maintained. Buried wires, RC, or GPS or other internal guidance might propell the vacuum and magnets or sticky rubber wheel. It could also prep and reset dirt or sand or grass beaches, fields, and ball fields to prevent liabilty, waste, or negligence.