The following information is from the JIEDDO (Joint Improvised Explosive Device Defeat Organization) website. Link: JIEDDO website
Chameleon -- This vehicle-mounted counter-RCIED system provides countermeasures to a wide range of current RC-initiated threats. This program was put in place to accelerate the production and fielding of jamming capabilities to the Marines. JIEDDO funded the addition of a component to the Chameleon which will improve interoperability with other systems and blue force communications and increase its overall capability.