Lang's shuttle was a Hideki-class Cardassian shuttle operated by Professor Natima Lang.
In 2370, her shuttle became disabled near Bajor and was tractored into Deep Space 9 after having its engines completely disabled and its life support systems were operating on reserve power.
Although Lang claimed they were damaged in a meteor swarm, it was clear to Miles O'Brien that the ship had been hit by disruptors. It was later determined that it was attacked by a Galor-class warship, which later arrived at DS9 to arrest the shuttle's crew.
This, however, was not allowed, and following repairs, the ship was able to slip away from the station unnoticed with help from a cloaking device installed in its central engine core by Quark. (DS9: "Profit and Loss")