Nancy Walker, nurse health educator at Naval Health Clinic Quantico, left, and Semper Fit intern Laurel Jimenez man their Great American Spit Out booth, raising awareness of the dangers of smokeless tobacco, at Bruce Hall Feb. 19, 2014. - Nancy Walker, nurse health educator at Naval Health Clinic Quantico, left, and Semper Fit intern Laurel Jimenez man their Great American Spit Out booth, raising awareness of the dangers of smokeless tobacco, at Bruce Hall Feb. 19, 2014.