No to all. Trust me, if it's a guess you don't have it 'cause the answer is actually pretty obvious.
OK, here's a minor edit to help:
My name's like a letter you don’t send,
Often break, even bend.
Where I work bears my name,
Standing stoic is my game.
With distant journeys I'm involved,
With lofty goals and problems solved.
A tiny titan bearing loads,
Raising odds as game unfolds.