Of the 22 species within the Morganza Spillway, three -- the copperhead, cottonmouth and canebrake rattler -- are venomous.

CNN: Wildlife rush for high ground in flood areas

Of the 22 species of snakes within the Morganza Spillway, three -- the copperhead, cottonmouth and canebrake rattler -- are venomous.

CNN: STORY HIGHLIGHTS

However, workplace napping should not be used as a ploy to perpetuate the rattler schedule, which the FAA should ban in aviation.

CNN: FAA knew controllers nap, ignored fatigue issue