The GBU-53/B SDB II is an air-launched, precision-strike standoff weapon that will enable the warfighter to defeat moving and fixed targets in adverse weather conditions. Using a GPS/INS system to guide to the vicinity of a moving target, the weapon has the capability to receive updated target coordinates mid-flight via two-way datalink (Link-16 or UHF) communications.  Using these network options, SDB II allows airborne or ground controllers the ability to send in-flight target updates and the capability to abort a mission post-release.