The aircraft are operating over RAAF Base Curtin in WA as part of Koolendong 22, a combined US-Australian training exercise involving 2,200 military personnel.
In a statement released on Thursday, the US’ Defense Security Cooperation Agency (DSCA) rubber-stamped the deal, which also includes missiles containers and support equipment alongside technical support and training.
The deal with CEA Technologies forms part of the federal government’s $2.7 billion Joint Air Battle Management System project, intended to improve Australia’s ability to defend itself against aerial attacks.
It’s thought any breakthroughs will improve the crucial data provided to ADF personnel, including the RAAF.
Guests included former Chief of Navy, Vice Admiral Tim Barrett; local Indigenous Elder Uncle Sonny Simms and Shoalhaven City Council Mayor Amanda Findley.
The F/A-18 Classic Hornet was "brilliant fun" to fly, according to Wing Commander Tim Ireland, Commanding Officer of No. 77 Squadron, who spent over 15 years of his RAAF career flying the fighter.