Freeze frame of surveillance video capturing choking student. (Greece Athena High School via Storyful)RELATED: Lost wallet returned to Florida woman by unidentified manCooper was able to dislodge a piece of peanut butter and jelly sandwich that the student had been eating that caused him to choke, according to local news media.Advertisement"Have you ever sat through training and wondered why you were there?
Training pays off," Steve Chatterton, director of security at Greece Central Schools, wrote in a tweet.Storyful contributed to this report..