Luis Magana is on a mission.

His mission is to give undocumented immigrants a "heads-up" before ICE comes knocking on their door.

"We have a situation where there is a lot of fear in our community. It's increasing and increasing everyday," said Magana. "There are lots of rumors about the activities of ICE (Immigration and Customs Enforcement)."

Magana, who operates "Project Voice" in Stockton which advocates for immigrants, is looking for about 20 volunteers who will be the eyes and ears for those fearful of being picked-up by ICE agents.

They will serve as "lookouts" in their neighborhood, or while behind the wheel to watch for any police activity in which the officers might be ICE agents.

"When our community watch the agents or any kind of agents are searching or being seen in our neighborhoods, they call us," said Magana.

He says he will then check out the call himself to verify if it is really an ICE agent or not. Magana also says in his 40 years of advocacy work, he has never seen the fear factor so high for undocumented immigrants.

Just a few days ago, ICE confirmed agents arrested more than 150 people in California in cities stretching from Sacramento to Stockton.