New Milford Police are showing off their new aviation unit.  It's made up of civilian volunteers and police.  A refurbished helicopter, similar to a news chopper but adapted for the military, was obtained through the surplus military program from the federal government.  There are no weapons involved as this is an observation helicopter.  It was retrofitted by a nonprofit, which also works with Stratford Police.  The organization also does operation maintenance, part replacement and other components.  New Milford Police say the helicopter was used on its first weekend in town to search for people reported missing in the Housatonic River.  Officers also used the onboard loudspeaker recently to alert people swimming in the area of Bleachery Dam that the river was off limits there.