It can also be requisitioned by the federal government to respond to internal threats by enforcing security to keep the peace within its land borders.[13] During events of national and international calamities and emergencies, it conducts humanitarian rescue operations at home and is an active participant in peacekeeping missions mandated by the United Nations—most notably playing a major role in rescuing trapped American soldiers who had requested for a quick reaction force (QRF) during Operation Gothic Serpent in Somalia. Troops from the Pakistan Army also had a relatively strong presence as part of a larger UN and NATO coalition during the Bosnian War and larger Yugoslav Wars.:70[14]