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GREEN BAY -  Kenny Clark was not enrolled at UCLA this spring, but because NFL rules state that rookies cannot participate in team activities while their school is in session, he worked out almost daily with former Bruins teammate Caleb Benenoch on campus.

The two were at the athletic facility on the morning of June 1 when cellphones buzzed all around UCLA warning everyone that there was an active shooter on the grounds.

"I was in the weight room," Clark said. "We got locked down. It was a sad situation for the UCLA family, I mean, both families, the guy who killed himself and the guy who got murdered. It was a tragic situation."

The school sent out the warning after gunfire was reported on the engineering side of campus. The athletic facility isn't close by, but the entire school went on lockdown as law enforcement officials tried to figure out what happened.

Later it was discovered that a UCLA PhD student, Mainak Sarkar, had shot and killed professor William Scott Klug and then himself.

All over campus, students and professors barricaded themselves in classrooms. Clark said he, Benenoch and a couple of others waited things out inside the weight room.

"I was all the way where the basketball stadium is, where the weight room is, so I was far enough (away)," Clark said. "We were locked in there probably about an hour and a half, two hours. Enough for me to take a nap. We were just watching the news. Everybody was just laying there, so I took a nap."

Clark continued to work out at UCLA, waiting for final exams to conclude so he could be cleared to take part in the Packers' off-season workout program. He, Northwestern fourth-round pick Dean Lowry and Stanford sixth-round pick Kyle Murphy all were prohibited from taking part in Packers activities until this week due to the NFL's in-session rule.

The three were able to communicate with their position coaches, however, through Skype, which allowed them to stay current on the installation of the defensive playbook.

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