The U.S. State Department has approved a proposed foreign military sale of Large Aircraft Infrared Countermeasure systems to South Korea.

Large Aircraft Infrared Countermeasures, or LAIRCM, are pods integrated onto aircraft to assist pilots with detecting and avoiding incoming threats. The devices are capable of countering advanced missile systems with no action required by the crew.

The LAIRCM program was launched by Northrop Grumman to protect large aircraft from man-portable missiles. The industry giant is listed as the principal contractor for the sale.

The proposed $141 million sale includes LAIRCM systems for up to 4 A-330 multirole tanker aircraft. Each system is comprised of 3 Guardian Laser Terminal Assemblies, 6 Ultra-Violet Missile Warning Systems, and additional equipment.

According to the U.S. Defense Security Cooperation Agency, which manages the FMS program, South Korea is seeking the devices to support its aerial refueling and troop transport capabilities, enabling their forces to project air power across larger distances.

The State Department says the sale advances U.S. security interests, noting the close military and economic alliance with South Korea.