Landing Zone Professional (also known as FSB Professional or Hill 185) is a former U.S. Army base northwest of Chu Lai, Quang Tin Province, Vietnam.

Following the sapper attack the PAVN continued to mortar the base and set up heavy machine guns to prevent helicopter support.

On 13 May the PAVN 3rd Regiment 2nd Division engaged Company A 1/46th Infantry near the base, the Company commander Captain Kern W. Dunagan would be awarded the Medal of Honor for his actions near the base from 12-14 May 1969.

On 15 May elements of the 1st Brigade, 101st Airborne were deployed to the area near Professional to lift the siege.

[2] Other units based at Professional included: This article about the Vietnam War is a stub.