They’re looking out for their brothers and sisters in blue.

An NYPD detective and his wife have started a suicide prevention nonprofit to honor the memory of their friend Nick Mencaroni, the Queens cop whose January suicide was the first to rock the department this year.

Detective Chris Panetta and wife Michelle, a Nassau County probation officer, have founded the Beyond the Badge nonprofit to help fight the scourge and pay tribute to Mencaroni, a childhood friend of Chris’.

“I knew Nick since junior high, before we were ever cops,” said Chris Panetta, 42. “He had stress just like everyone else. He was working through it.”

Mencaroni was there when the Panettas wed on Jan. 5, but before the month was over, he was gone.

“I’ve never heard Chris sound like that,” Michelle Panetta, 33, told The Post of the call she got from her husband when Mencaroni, 40, ended his life on Jan. 25.

As the toll mounted, the couple decided they had to act, so they started the non-profit, which will host a charity softball game called Strike-out Suicide at noon Saturday in Long Island’s Baldwin Harbor Park.

“It’s everyone’s responsibility to look out for each other and be willing to help,” said Chris. “This is the new ‘see something, say something.’”