We liked the free-flying dogfighting levels, which reminded us of the classic X-Wing and TIE Fighter space-flight sims from Lucasarts on the PC. They're quite a bit simplified for Trench Run, though.
Instead of adjustable speed, your most helpful tool is a Force slowdown button that you can activate by touching anywhere on the left side of the screen. This makes it easy to line up your targets and take the shot by hitting the right side of the screen. You have different camera views, including one inside the cockpit, and the tilt controls seemed to work well for this simplified shooter.