City Council Speaker Adams plans to introduce a bill this week that would require private security guards receive active-shooter training and earn higher wages — proposals aimed at creating better conditions for the front-line workers in the wake of this summer’s grisly Park Ave. mass shooting .

The July 28 massacre at the 345 Park Ave. skyscraper in Midtown left four victims dead, including Aland Etienne , a 45-year-old security guard at the building, which houses the offices of NFL that the suspected shooter sought to target before killing himself.

According to police, Etienne, who was unarmed, unsuccessfully tried before he was killed to crawl over to a desk in the building’s lobby to hit a button that would have shut down all elevator service — an effort that highlighted the

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