The air movement profiler can be a fixed design or it can be {HEAD ~ a design} which is capable of adjusting the shape and size of {TAIL ~ the deflecting surface} 
The air movement profiler can be a fixed design or it can be { HEAD ~ a design } which is capable of adjusting the shape and size of { TAIL ~ the deflecting surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL