Well known Pennsylvania State University established The Institute for Non-Lethal Defense Technologies in November 1997 as part of its overall mission devoted to teaching, scientific research, and educational service. Since this time it is one of many possible meaning for short hand NLDT. There are many other meanings for this abbreviation.
One of its motives were quoted as: “Should children of the world perceive American soldiers as peace-keepers? Then Americans must have means to keep the peace in world communities without the use of deadly weapons for upcoming generations to appreciate and experience peace and freedom.”