and a specialist AESA radar system, the Multi-Platform Radar Technology Insertion Program, or MP-RTIP. In 2010, Northrop disclosed the sensor capabilities of the new Block 40 aircraft, including the MP-RTIP radar, emphasising surveillance over reconnaissance. On 14 April 2014, a Block 40 Global Hawk completed the first Maritime Modes program risk-reduction flight to enhance the Air Force's maritime surveillance capabilities. Maritime Modes is made up of a Maritime Moving Target Indicator and a Maritime Inverse synthetic aperture radar (MISAR) that function together to provide ISR information on vessels traveling on the water's surface. During the 11.5-hour flight off of the California coast, the MISAR collected data on over 100 items of interest. Maritime Modes is planned to be integrated with the RQ-4B's existing MP-RTIP radar to detect and produce synthetic aperture radar imagery of ground vehicles. In November 2015, Northrop Grumman selected the Garmin International GSX 70 weather radar to be installed on Air Force Global Hawks. The GSX 70 is designed to provide operators with real-time weather information, offering horizontal scan angles of up to 120 degrees for better visibility into the strength and intensity of convective activity and a vertical scanning mode to analyze storm tops, gradients, and cell buildup activity. It also has a Turbulence Detection feature to identify turbulence in air containing precipitation and other airborne particulates and Ground Clutter Suppression that removes ground returns from the display so operators can focus on weather. Installation is expected to begin in early 2016. Installation of weather radars on the Global Hawk fleet completed in late 2019. Visible light/infrared The visible and infrared imagers share the same gimballed sensor package, and use common optics, providing a telescopic close-up capability. It can be optionally fitted with an auxiliary SIGINT package. Operational history U.S. Air Force Following the September 11th attacks, the normal acquisition process was bypassed almost immediately and early developmental Global Hawk models were employed in overseas contingency operations beginning in November 2001. Global Hawk ACTD prototypes were used in the War in Afghanistan and in the Iraq War. Since April 2010, they fly the Northern Route, from Beale Air Force Base over Canada to South-East Asia and back, reducing flight time and improving maintenance. While their data-collection capabilities have been praised, the program lost three prototype aircraft to accidents, more than one quarter of the aircraft used in the wars. The crashes were reported to be due