Notices modifications on Vulture Droids and precisely shoots one down

Vader picked one of the droids and locked on as it lurched left and right, attempting to shake his pursuit. The vultures were slow, awkward fliers, and something about them struck him as odd—and then he had it: They’d been modified. All of them had bulges on their bellies, an added compartment or weapon of some kind. It made them awkward in flight, far less maneuverable than usual.

Curious, he closed on one, targeted it with care, fired, and sheared off one of its wing pods. It spun out of control, and the centrifugal force started to tear it apart. Vader stayed on it as the belly compartment tore loose to reveal its contents.

Hundreds of metal spheres spilled out and into space. Vader slammed on his stick, driving the interceptor down, but he could not avoid the shrapnel altogether. The spheres slammed into his ship and clung there, and he saw that they weren’t shrapnel but buzz droids. The magnetic balls sprouted legs and eyestalks and clambered along the wings and fuselage of his fighter, positioning themselves to do the most damage.

- Lords of the Sith, Chapter Six, Pg. 133