馬克·凱利Mark Kelly 前美國太空總署太空人（亞利桑那州民主黨人）介紹了公共服務對他意味著什麼。｜ #新唐人電視台

I wanted to ask you, what does service mean to you? I think service means different things to different people. I'm the son of two police officers. My grandparents, grandfathers, both served in World War II. My grandmother served this country making the Norton bomb site in New Jersey in a factory. I don't know if you've heard of that. It's one of the things that changed the air-to-ground warfare, especially in Europe, but also in the Pacific. For me, service to my country is serving in the United States Navy, and then serving in space as a NASA astronaut for 15 years, and now serving in the United States Senate. My service now, I think, is in some ways, not in all ways, but it's some of the most significant service I've had this three and a half years working as a U.S. Senator.