Good question and you have to look at it a few ways.
First of all it depends on what you would be doing and where you actually do it at.
For instance: you could be working on a rocket engine for a ballistic missile. Or you could be helping to put together this type of stuff.
No need for you be told anything on this score.
However: if you were to be working on - say - a space shuttle, then you would be actually going into it with the full knowledge that you are duping the public. The problem is; if you were to be working in that industry as a bonafide engineer, then it's more likely you will be dealing with jets and such like.
From that point, you are just another worker that's part of compartmentalisation of the whole set up. You would believe your work has some input into space, maybe in some capacity - let's say, a rocket engine that powers a satellite or some other made up piece of trash, yet that engine could be simply put into a small missile. You know, things like that.
Before you go into the
real space rocket stuff, you have to take minor acting lessons to brush up on the bullshit you've set yourself up with, for life, for good pay.
The thing is; are you any worse than say, a wall street stockbroker? are you any worse than an actor putting his/her face to a product that they wouldn't touch with a barge pole, yet think it's fine to be paid to coax us into using that product?
Probably not, because let's face it, we get swindled out of billions in every walk of life with people who willingly take part in this stuff.
The ones I feel sorry for, are those that actually walk into something like this and don't actually know until later what they've walked into, yet have no choice but to actively take part now they know what's going on.
I think a young Neil Armstrong fell into this trap in his early years and then had no choice but to go along with it, as he knew the penalty if he refused.
James Brolin and crew, in capricorn one maybe, eh?