 On 9 March HMM-365 was replaced by HMM-162.The 9th Marine Expeditionary Brigade (9th MEB) were tasked with defending Da Nang AB, while overall responsibility for defending the Da Nang area remained with the ARVN, SHUFLY was absorbed into Marine Aircraft Group 16 (MAG-16), part of 9th MEB.On 10 April, F-4Bs from VMFA-531 landed at Da Nang AB, this would be the first USMC fighter-bomber squadron deployed to Vietnam.