Park ranger
A park ranger, park warden, or forest ranger is a person entrusted with protecting and preserving parklands – national, state, provincial, or local parks. "Parks" may be broadly defined by some systems in this context, and include protected culturally or historically important built environments, and is not limited to the natural environment. Different countries use different names for the position. "Warden" is the favored term in Canada, Ireland, and the United Kingdom. Within the United States, the National Park Service refers to the position as a park ranger. The U.S. Forest Service refers to the position as a forest ranger. Other countries use the term "park warden" or "game warden" to describe this occupation. The profession includes a number of disciplines and specializations, and park rangers are often required to be proficient in more than one.
Ranger School
The purpose of the course is learning to soldier as a combat leader while enduring the great mental and psychological stresses and physical fatigue of combat; the Ranger Instructors (RIs) – also known as Lane Graders – create and cultivate such a physical and mental environment. The course primarily comprises field craft instruction; students plan and execute daily patrolling, perform reconnaissance, ambushes, and raids against dispersed targets, followed by stealthy movement to a new patrol base to plan the next mission. Ranger students conduct about 20 hours of training per day, while consuming two or fewer meals daily totaling about , with an average of 3.5 hours of sleep a day. Students sleep more before a parachute jump for safety considerations. Ranger students typically wear and carry some of weapons, equipment, and training ammunition while patrolling more than throughout the course.