[tibbon]

Pretty sure I always go with D as in Delta, unless I'm on the phone with someone who I'm fully aware will know what I'm talking about (various friends, etc who will do the same thing).

They understood it well enough, but from my POV I was shocked, because never in my life did I have to spell my first name. I know in the US to always make a clarification of the spelling of my last name.

The normal line I give people in the US when they are looking up my account (perhaps at at bank) is, "My name is David Fisher, with no 'C' in Fisher" (since some spell if Fischer) and that normally does the trick.

You do make a good point however that just because the NATO phonetic alphabet is standard for NATO, doesn't mean it is something understood worldwide, anymore than I'd understand Kanji.