That's how easy it is to go from peaceful mission to offensive weapon.

We're traveling through well-known space on our way to a peaceful mission.

A peaceful mission would have left in daylight, without any need for stealth.

We were bound through this sector on a peaceful mission.

We are on a peaceful mission in your sector of space and would like to open communications.

We are on a peaceful mission and pose no threat to you.

We're on a peaceful mission to this part of the galaxy.

But no such issues arises; your son will join a peaceful mission to a friendly people.

"What did they think this was going to be, a peaceful mission?"

And this was supposed to be a peaceful scientific mission, she recalled.