Mark Brouwer was on an evening stroll in the Nevada desert Oct. 20 with wife Jennie and 3-month old daughter Anna when he felt a little jab on the side of his foot. He thought he brushed up against a cactus until he looked back and saw a rattlesnake. Brouwer, who is working near Alamo, Nev., monitoring tortoises, was taken 100 miles by ambulance to a Las Vegas hospital, where he received 18 vials of…