if NASA did developed us a tractor beam? NASA build a tractor beam? Eb... 
have you lost your mind?
No, but if NASA did develope a tractor beam... 
we could plow at night!
If red X above go to http://1.bp.blogspot.com/_kng9nNTclfs/SipdWZVPqII/AAAAAAAAApg/V5iX99dhM8w/s320/GreenAcres_tractor.jpg or http://www.maggiore.net/greenacres/images/wallpaper4.jpg or http://www.tvchannelsfree.com/tcfcrawler/thumbs/000/139/139467.jpg
On September 9, 1942, Albert enlisted in the United States Navy and was discharged in 1943 to accept an appointment as a lieutenant in the U.S. Naval Reserve. He was awarded the Bronze Star with Combat “V” for his actions during the invasion of Tarawa in November 1943, when, as the pilot of a U.S. Coast Guard landing craft, he rescued 47 Marines who were stranded offshore (and supervised the rescue of 30 others), while under heavy enemy machine-gun fire.