The runway length is 3016m (9895ft), and, according to the charts, there are also "Arrestor Barriers (nets) 75M before THR RWY 22L", as well as "Arrestor Gears (hooks) 583M, 554M beyond THRs RWY 04R and 22L respectively".
Considering that arrestor gear can have operational consequences for civil aircraft (Skybrary link), apparently its presence is operationally justified for the Hellenic Air Force.
My question is
What could be the reason that arrestor gear is placed on a fairly long runway? The fighters operating from this base are, I believe, F16s and Mirage 2000s. Would a 3-km/10k-feet runway not be enough for such an aircraft, even if we assumed braking problems?
Note: I have been on the island many times as a civil aviation passenger, and the arrestor gear is always in place, so it seems to be a (semi-)permanent installation.