The Grumman S-2 Tracker was the first purpose-built, single airframe anti-submarine warfare (ASW) aircraft to enter service with the US Navy.
Onye Grumman S-2 Tracker (nke a na-akpọ S2F) bụ ụgbọelu mbụ ụgbọelu nke e wuru maka agha agha na-alụ agha (ASW) iji banye ọrụ na United States Navy.