Ex-treasurer Joe Hockey has quietly attended his first US-related event as ambassador-designate, rubbing shoulders with future boss Foreign Minister Julie Bishop.
Mr Hockey turned up unannounced at a Qantas hangar at Sydney airport where Ms Bishop was speaking on Thursday about the government's diplomacy program at a G'Day USA event.
"Joe and I are great colleagues, we're good friends," Ms Bishop told reporters.
Mr Hockey served as federal treasurer for two years before being turfed following September's leadership spill.
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