Defense Technology Monitor No. 67

August 9, 2021 Richard M. Harrison, Autumn Kearny

U.S. military eyes travel-size nuclear reactors;
Tanker drone fuels Navy plane;
Invisibility approaches reality;
Pentagon planners eye directed energy to maintain space superiority;
Protecting against bullets with nanomaterial

Clarifying the Planetary Defense Mission

June 15, 2021 Peter Garretson Defense Technology Program Brief

Since 2005, Congress has recognized that an asteroid impact represents a serious threat to national security. Though Congress tasked NASA to survey hazardous asteroids larger than 140m by 2020, sixteen years later it remains incomplete.