Mostly yes, but some situation can force you to do different obstacle as was your desire. Course Volunteers will be assigned a specific obstacle when you check in, and will be educated on the following:
1.) Which mile you are stationed at
2.) Which obstacle you are stationed at
3.) Knowing the course
4.) Enforcing proper burpee execution
5.) Trying the obstacle out before you volunteer
6.) Being aware of which wave is the competitive wave
7.) How to set up video camera for Burpee Zone
8.) Motorola communication procedures
9.) Emergency procedures
10.) Specific rules of the obstacle