Stress
On an average day, being a game warden is not the most stressful thing in the world. Usually it's filled with filing reports and surveying the field. You fall into a routine, just like any other job. Occasionally there are groups of schoolkids or scouts that you'll have to deal with, so on those days the stress can be above average. Even criminal investigations are mostly office work. Typically, game wardens fight boredom more than anything else most days.
Of course, there are those other days. The not-your-average-days. The days when you're hunting down criminals who are actively engaged in poaching. Or chasing drug smugglers running dope or smack or slap or monkeyfist through your forest. Or conducting search and rescue missions that involve you and dozens of other first responders and maybe even a helicopter, looking for a boy who wandered off from a campsite.
On these days, the average stress quotient of the entire office goes from zero to Point Break. Make sure you've got some aspirin stored somewhere close.