Air collision fears slow expansion of US drone use Posted by Paul Mace on April 27, 2009 at 11:24am http://www.google.com/hostednews/ap/article/ALeqM5ha8RvErzxxZh6lD5UlADk-m0qstAD97OT03O0The salient line is "until the pilotless aircraft gain the high-tech ability to sense and avoid commercial aircraft and other airborne objects, the government is unlikely to allow them to operate much more freely in congested airspace." Read more…