The US Department of State has approved a potential sale of three Northrop Grumman RQ-4 Global Hawk unmanned surveillance systems to Japan.

The Defense Security Cooperation Agency notified Congress of the possible foreign military sale on Nov. 19, according to a DSCA statement.

The deal for three Block 30 Global Hawk remotely piloted aircraft, including three Enhanced Integrated Sensor Suites and 16 navigation systems, is worth up to US $1.2 billion.