In December 2011, it was reported that the project was to be ended after 16 years of development and a cost of over US$5 billion. While in its current form, a relatively low power laser mounted on an unprotected airliner may not be a practical or defensible weapon, the YAL-1 testbed is considered to have proven that air mounted energy weapons with increased range and power could be another viable way of destroying otherwise very difficult to intercept sub-orbital ballistic missiles and rockets. On 12 February 2012, the YAL-1 flew its final flight and landed at Davis-Monthan AFB, Arizona, where it was placed in storage at the AMARG until it was ultimately scrapped in September 2014 after all usable parts were removed.