Brigadier General Michael Walsh was just being polite... but Barbara Boxer didn't like it. Watch the following clip.
Boxer: Well why has it been delayed?
Walsh: Ma'am, the LACPR is...
Boxer: You know, do me a favor; could you say "senator" instead of "ma'am"? It's just a thing. I worked so hard for that title. So I'd appreciate it. Yes, thank you.
Walsh: Yes, senator.
What arrogance! Did she call him "general" while addressing him? Gen. Walsh was being polite, but no, that wasn't good enough. What an ego!