The Queen has taken a tour of RAF Marham in Norfolk to see how it is preparing for the arrival of its new fighter jets.
Children from nearby schools lined the roads leading to the camp gates, waving flags as her car arrived at the base.
RAF Marham, which has been the home of the Tornado GR4 Force, will welcome the F-35 Lightning Force next summer.
While there, the Queen officially opened the new Lightning Operations Centre.
It is the first building completed as part of a development scheme building the infrastructure needed to support the new jets.
"The Royal opening of this operations hub for the F-35 brings us another step closer to these pioneering jets flying from their UK home later this year, and their take-off from the magnificent aircraft carrier which proudly bears Her Majesty’s name.
The Queen also met a number of serving personnel during visits to the Warrant Officers' and Sergeants' Mess.
She later presented the Firmin Sword of Peace to RAF Marham's station commander, Group Captain Townsend.
The award recognises a unit that has been judged to have made the most valuable contribution to humanitarian activities. Marham received the sword following its work in 2016 in Syria and Iraq, as well as with communities closer to home.