A curved ramp from the ground up to the door of the plane. No stairs involved.

The zig-zag ramp takes up a lot of space, and my impression is that it doesn't move much more than from it's parking location to the closest jet parking spot, the one all the way on the left end of the terminal building, looking at it from airside. I don't know if it is a PJIA asset, a JetBlue asset, or someone else's, but JetBlue sure does use it a lot.