The US Air Force EC-130H Compass Call has served as an important airborne electronic attack weapon system and is based on a heavily modified version of the C-130 Hercules airframe. While the EC-130H Compass Call may look like another Hercules on the outside, its role is similar to that of the EA-18G Growler, which specializes in electronic warfare (the Growler is based on the F/A-18F Super Hornet).