A section of the video. Photo credit: CBS News

Marta Rivera Alanis, a 33-year-old kindergarten teacher and mother of two, received a special recognition from local Mexican authorities for her heroic action calming her 15 pre-school-age students during a gun battle which raged outside her classroom Friday.

The incident occurred Friday at a school in Monterrey, 140 miles south of the Texas border and once one of the safest, most prosperous cities in Mexico.

But in recent years, drug traffickers have been settling into Monterrey’s posh neighborhoods, changing the tranquility of the city.

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