The U.S. Marshals Service has activated its elite Rapidly Advancing Manhunt (RAM) program in the urgent search for Travis Decker, wanted in connection with the murder of his three daughters in Washington state.

The RAM program, according to the U.S. Marshals Service, is designed to expedite the capture of violent fugitives through real-time intelligence coordination and rapid deployment of specialized teams, is fully engaged in the effort to apprehend Decker. 

More than 100 officers from federal, state, and local agencies are actively involved in the manhunt in an intensive search effort that includes aerial surveillance, tracking dogs and backcountry patrols.

The Marshals Service is offering up to $20,000 for information directly relating to Decker’s arrest. 

Authorities said Decker, a former Army infantryman with survival skills, may have used his rugged survivalist capabilities to evade capture. Authorities previously described him as “dangerous,” warning residents not to approach him and describing him as armed. 

“This is someone with military training, someone who’s lived off-grid before,” Chelan County Sheriff Mike Morrison said. “We’re dealing with a highly capable survivalist who may be using the terrain to his advantage.”

If convicted, Decker could face a maximum sentence of life in prison without the possibility of parole. 

Fox News’ Julia Bonavita contributed to this report.