Per 
Description: it appears to be a 18 meters helicopter which of type was unindentified, measures atleast 100 pounds, it has advanced military weapons and appears to be extremely resistant,it is made out of titanium and reinforced steel propellers and futuristic aspect,its anomalous abilities are the fact its alive and moves around when it wants and its proven to be extremely hostile, attacking any individual on its sight
Addendum: SCP-2345 was found rampaging a military base on [DATA EXPUNGED] at Russia, the helicopter destroyed the entire base withou problem, as soon as a soldier reported it to the foundation, they took the helicopter down for study, using a discharge bomb that incapacitates it.
Special Containment Procedures: SCP-2345 is way too big and destructive to be contained, it was proved
That it cant be contained as long of use of the discharge bomb, it must be monitored by guarsa while it flies and they cannot be seen, if SCP-2345 finds human life or anything similar it will rapidly attack them, so the guards use the discharge bomb
