The largest hospital system in the state is preparing for every possible emergency following the fatal shooting in Tulsa.

Scott Strauss, who heads corporate security for Northwell Health, says he spends every day preparing for a possible active shooter situation.

"I don't know what's going to happen tomorrow, but I can honestly say we're doing everything we possibly can to prevent it and to mitigate it as quickly as possible," Strauss says.

At every one of Northwell's 23 hospitals, visitors need to present government-issued ID, which is checked against a patient database.

Visitor ID cards are required to gain entry through turnstiles, and armed guards are posted in the lobby and throughout the hospital.

Strauss says all of the armed guards are current or former law enforcement personnel. He says they go through even more training than New York requires.

Strauss also says all hospital workers are trained in how to identify patients or visitors who may consider doing harm to others and how to report those people to security.

Samantha Lamantia, patient experience specialist for Northwell Health, says there is a panic button in every room that would have authorities respond immediately.

Northwell Health CEO Michael Dowling says while his team is doing everything to keep hospitals safe, it's critical for Congress to pass legislation that will impact gun violence.

"You should definitely have universal background checks, why not?" Dowling says. "Why not get rid of assault weapons? Who in their right minds needs to buy an assault weapon?"

Strauss says Northwell Health is considering installing metal detectors as an extra layer of protection.

"They're going to get world-class health care here," Strauss says. "We want to provide them with world-class security."

Several health care organizations, including National Nurses United and the American Medical Association, have also made a push for action on gun violence.