. >> if a young person out there thinks they want to be an orkologist, what advice would you give them? >> i would advise them to stick with it. hang in there. you can get a job doing this. it's not the easiest thing. i would advise them to make sure that they go to a good college. they're going to want to pursue an advanced degree. probably not just stop with an undergraduate degree and just hang in there and give it a shot. the national park service is a great agency. there's a lot of opportunities in the national park service to do this kind of work and other historic preservation work. i certainly always encourage folks to consider the national park service. >> somebody is out there working and find one of these fragments or a coin, describe the scene. is it sifting or is it digging at the actual location? how do they find these things? >> a little bit of both. all the dirt goes through a screen. so we screen everything we dig up. sometimes as you're excavating, using a trowel or whatever, you'll uncover objects in in si situ. it's exciting for people. we work with a lot of volunte