Translation of francotirador in Spanish-English

When I saw the small plane I did not feel all to good about flying back to Cancun. It had only twenty four seats and was driven by propeller, which made a lot of noise. Fortunately the weather was good.
In addition, after the tests I would like to give also a presentation to some of the teachers, as usually the different ideas come with the presentation. After speaking with them, some ideas emerge...
The travel agent's representative promised that they would return us the difference of the money. They also assured us that we would get special treatment, such as extra drinks and a Kayak expedition.