oslo norway friday receive first three 40 f-35 fighter jet order lockheed-martin part efforts beef air force norway fourth country unite state israel italy receive plan warplanes improve entire norwegian defense general major tonje skinnarland head norwegian airforce tell broadcaster tv2 main task secure air control allow part norwegian defense operate safely say next year norwegian airforce take delivery six aircraft year total oslo commit order 40 f-35 plan another 12 book plan norway express interest place firm order estimate cost acquire 52 new combat aircraft would nok 67.9 billion 8.36 billion 2015 value include support equipment simulators weapons train accord norwegian ministry defence norway receive first f-35 fighter jet