Border line operations

[FDNYBuff97 5]

I have a question about border line operations like on McLean Avenue in Yonkers or the Bronx River Parkway , FDNY & Yonkers FD both respond to A car accident on the parkway if it's on the city line , I believe it's FDNY Box 8940 or 8941 which normally is Engines 63 , 62 , Ladders 39 , 32 & Battalion 15 or 27 from the FDNY & Yonkers FD Engine 313 , Ladder 73 , Rescue 1 , Squad 11 & Battalion 2. I have pictures of them operating at an accident on Halloween last year. But now for McLean Ave , About 2 weeks ago I saw Engine 63 & 39 On the corner of Bronx River Road and McLean Ave , I asked 63 if they were drilling they said they were testing their fittings with Yonkers fittings on Yonkers hydrants , I don't think 39 Truck was doing the same they just parked the rig and went inside some building. I always see Units from Battalion 15 & 27 in Yonkers responding to Boxes or returning , Only a couple of times have I seen Yonkers Fire & FDNY together but I have pics. So does any one know if there is a plan for Border line operations ? Say there is a fire on E.240th Street in the Bronx , which is the same street as McClean , one side of the yellow line is E.240th which turns into Nereid Ave. & the other side is Mclean Ave.Is there some type of Response plan for that being that it really is the same street for both Departments to respond and whoever gets there first operates or FDNY takes it & Yonkers stands by , I live on Bronx River Road , so I was just wondering , as you can see I'm a big buff of both Yonkers FD & The FDNY.The first set of pics are from The Halloween accident on the Bronx River Parkway , but it was not 39 Truck that time 34 was acting 39 for the day & second are from when 63 & 39 were in Yonkers checking different fittings than they left to go to Mount Vernon.