August 17th was supposed to be the day of the most recent testing of the MDA´s (US´s Missile Defense Agency) new Boeing 747 mounted anti missile laser system. However, a faulty cooling system prevented completion of the tests.
The laser, created by Lockheed Martin, has been in testing for a while now. Preliminary tests seem promising, as it had 50% success rate with actual military grade missiles from the get go.
Testing is scheduled to resume August 21st, where the MDA will attempt to shoot down missiles from twice the range as the previous tests. Actual ranges that the missiles are being shot down from have not been disclosed.