Dan Keenan, a mechanical engineer, looks for python nests as he makes his way through the thick underbrush in the Big Cypess National Preserve, Saturday, Jan. 12, 2013. Officials hope t

 

              Dan Keenan, a mechanical engineer, looks for python nests as he makes his way through the thick underbrush in the Big Cypess National Preserve, Saturday, Jan. 12, 2013. Officials hope t
Dan Keenan, a mechanical engineer, looks for python nests as he makes his way through the thick underbrush in the Big Cypess National Preserve, Saturday, Jan. 12, 2013. Officials hope the "Python Challenge" competition will help rid the Everglades of the invaders while raising awareness about the risks exotic species pose to Florida’s native wildlife. (AP Photo/J Pat Carter)