Just a short true story:
Back on 1997, I was working for the Sec of the Air Force in the Pentagon. One day, on the anniversary of the bombing of Hiroshima, a bunch of protestors gathered in front of the entrance I used when coming from North Parking.
In front of me was a Marine. A true pre-politically-correct poster boy for the Marines—tall, fit, walking with a purpose. A no nonsense presence.
We approached the protestors that stood in our way and the Marine, all the while not breaking his stride, quickly reached out with one hand and grabbed by the hair the lone protestor standing smack-dab in our way and YANKED the guy, physically throwing the (by now) screaming protestor aside.
The Marine never missed a step and kept on walking. The rest of the protestors were stunned into awed silence and parted like the Red Sea.
It was wonderful.
I had a lot of assignments with the other services during my time in the Corps and I enjoyed working with them. The different cultures were interesting and sometimes pretty funny - I had one female Air Force NCO break into tears when she saw that I was an officer and had to salute ("I just can't get used to your uniform!" she cried).
Fun stuff.