these are unitized premanufactured curtain wall systems that are shipped over large -- on large palettes and hoisted up. swinging by crane. and then moved onto the wall and affixed. so they have metal-glass-steel all connected. so they have to be hoisted and applied right directly in front of where that wall is going to apply to. >> that's how the whole building is being restructured? >> they just go down. >> are there trees or any or hazards on other sides of the building that have presented themselves that don't -- that don't need to be removed? >> all the trees need to be removed. at the negotiable hearing, most of the trees -- initial hearing, most of the trees -- how many were granted to be removed? >> 24 -- i think there was 12 trees that were granted removal that were -- >> and granted removal for purposes of this hoist? >> right. and i guess part of it, what we did understand is it is a consistent process throughout the whole building along all sides. so it should have been we thought would have been granted for all of them, spail since we're replacing the 24 with 34 trees. >> an