INSTANTLY throw a projectile that expands into a brief vision-blocking cloud on impact with a surfact. HOLD the ability key to curve the smoke in the direction of your crosshair.
For additional mobilty, Jett can combo a [Q] Updraft into [E] Tailwind for extended elevation traversal.
Jett's [Q] Updraft is most commonly used to boost to the top of boxes for advantageous gunfights where the opposing team won't expect you.
Jett has the passive ability to float on descent after jumping by holding Spacebar. This allows her to traverse between some elevated positions.
Note that your aim is still inaccurate during floating.