Search and rescue helicopters could be grounded at RAF Valley on Anglesey if a proposed strike by the Unite union goes ahead.
It claims that workers who refuel jets and helicopters are among those being balloted for strike action in a dispute over pay
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A dry night with clear spells in the west. Temperatures will fall, with thickening cloud inland by the early hours.
The First Minister Carwyn Jones is under fire after claiming that the Tata Steel management buy-out team "has not yet raised the money".
Police say they want "no surprises" from Welsh football fans.