Niscemi is a little town and comune in the province of Caltanissetta, Sicily, Italy.

The name Niscemi is derived from the Arabic word نَشَم neshem or its singular form نَشَمَة neshemeh, this being the name of a particular type of tree.

Its tallest antenna is a guyed mast, 252 metres (827 ft) high, situated at 37°7'32"N 14°26'11"E. The United States Navy installation is the focus of ongoing protest by locally based activist groups, who oppose it and demand its removal on grounds of health (danger from electromagnetic radiation), environmental damage and opposition to the use of armed drones in the Middle East, allegedly guided from this base.

[4] Allegations of armed drones being operated from this base have never been verified however, as the newly installed MUOS (Mobile User Objective System)[5] was intended as an upgrade to legacy communication equipment, and is not intended to communicate with unmanned flying drones.

This article incorporates public domain material from the Air Force Historical Research Agency