What to know about the 100 US 'Switchblade' drones heading to Ukraine

Unlike larger drones, it's not meant to return after its mission.

In a White House list of weapons being sent to Ukraine as part of a new $800 million military support package announced by President Joe Biden Wednesday -- among nearly 10,000 anti-armor weapons, 800 anti-aircraft Stinger systems, and thousands of rifles -- appeared 100 "tactical unmanned aerial systems."

But these aren't the large U.S. drones you're used to seeing.

The 100 unmanned systems heading to Ukraine are actually small "Switchblade" drones, a U.S. official told ABC News.

Unlike long-range Predator drones, which look similar to small planes and fire missiles at targets, the smallest Switchblade model fits in a rucksack and flies directly into targets to detonate its small warhead.