Paywalled article, I will edit and include links to coverage I find of this elsewhere.

The apparent mistake revealed that the plane, a highly modified Hawker Beechcraft Super King Air 350ER, circled for hours over central Gaza on the same day that multiple Israeli airstrikes killed at least 23 Palestinians in the same area, including women and children. The aircraft watched Gaza from above, using the callsign “CROOK12.” Not long after, researchers with investigative outlet Declassified UK found another aircraft, owned by the same company, had also flown surveillance missions over Gaza months earlier.

The two aircraft are owned by Straight Flight Nevada Commercial Leasing LLC, a Nevada-based corporation, according to the FAA registration documents. The company is owned by Sierra Nevada Corporation, a large defense contractor that rarely makes headlines but has won US government defense contracts worth tens of billions of dollars.