Logistical concerns aside, I'm going to have a look at the opening for myself and tell you what I think.
While I've pulled the trick of opening with a dialogue line before-it's a cool way to get into the rhythm of a section immediately-you kind of need to earn that with a little description of the people speaking. A cold open with a dialogue line is cool and all, but the reader is going to be lost quickly without something more to anchor them or at least a cool vibe to the dialogue.
For example, on your second dialogue line, I'd add a description at the end. Is this dude a (space)marine with a helmet, Or does he have more of a formal officer's uniform with nice badges? Or does he look more like a bellhop at a hotel? I don't have the necessary information to evoke anything of the rest of his mannerisms here. We do get details, but they're definitely too late, I think.
Later on, the flow is a little choppy, with fast-forwards not linking together very smoothly, and at the same time a little too plodding for my taste. It's a little too wrapped-up in itself without even sprinkling in much lore or vibe on the account of lack of description-these are fairly fatal mistakes to make for a first chapter.
Good example, when he's waiting for the ship you never describe how the waiting area looks. My intuition tells me it's a lot like a civilian airport but all the lore we've got so far on this kid gives a military vibe. It's kind of confusing, and more confusing than an opener should be. The pizza scene makes me lean even more towards civilian settings, but a military background is still inferred.
To be fair, you at least paint a fairly clear picture of your main character's personality-very valuable info for a casual viewer-but overall this opening chapter leaves a lot to be desired as far as I'm concerned.
