Yes we are short
All recruted as Wis Ops now then after successful completion of initial training then streamed to either
Eng - I dont think they need many now but perhaps one could let you know
AEop - I think they are just about on strength
ALM - About 8% undermanned but suffering badly on the helicopter fleet
Air Sig - Very specialised and I dont know a lot about them. Maybe one of them could chip in and give you the gen.
The training machine takes time so we will be short for the next few years. Hope that helps.