An interesting glimpse into the daily missions of the US Navy Boeing P-8A stationed at NAS Sigonella is documented by a series of videos that have been brought to our attention by the Twitter account @johnspectator.
These include three videos showing the takeoff of a Poseidon from Sigonella, mid-air refueling conducted by a USAF Boeing KC-135R (reg. 62-3540), and a nighttime landing also at Sigonella.