According to an Airforce spokesman: " The personnel doing the testing was two experienced pilots.Performing a test program.
Also Stavanger Aftenblad reports Hovedredningssentralen was informed of the incident.( Havari)
Something I suppose they promptly acted on as soon as the awful racket next door stopped! ( SAR HQ Norway, Main Rescue Central, Hovedredningssentralen, HS, is located across from the RNoAF 330 Squad at Sola , SVG).
From his wording it is unclear to me if it was Norwegian officers or factory test pilots behind the wheel!
I am sure they take euros or sterling in the officer mess if the latter.