The New York Fire Department took part in real-life response drills for homeland defense emergencies Wednesday, preparing for everything from biological to nuclear attacks.

It's called Task Force 46, the second annual boot camp in which FDNY members work alongside 170 members of the U.S. Army, National Guard and Canadian armed forces.

"We're not coming here to be in charge. We're coming here to support whatever is needed, to get the locals back up on their feet, to get the city running to whatever city it might be. Whether it's New York, or LA, it's doesn't matter," said Chris McKinney, chief of staff for Task Force 46.

One of the units in the training camp is decontamination.

"We're looking at any chem, bio type detection and we're also doing some mass casualty decontamination on lines. But the most important thing that we really learn here are the new techniques for urban search and rescue," he said.

The program was virtual last year due to the pandemic.