obsolete. Instead, the planning of over-all operational accomplishments 
will include project requirements that can be most efficiently obtained 
by ground survey parties. 
It is important to note that the operational area encompassed by the 
ground stations will not necessarily coincide with the visual photo area. 
The trilateration net and control point photography will be acquired on a 
priority basis where ground stations can be installed. Visual mapping 
photo and APR will be acquired in the clear weather area regardless of 
priority. 
In conclusion, I can state that the sophisticated survey and mapping 
system presently under development, combined with this operational concept, 
will rapidly gather high quality, precise data for large scale maps. 
To further substantiate the basis for this concept, I refer you to a 
report on the value of 30 second vertical photography which was compiled 
by the Ohio State University Research Foundation and published in May 1962. 
The noted photogrammetrist, Dr. Brandenberger, states in his conclusions 
that "One of the greatest advantages of vertical photography lies probably 
in a very simplified procedure of determining secondary ground control." A 
savings of as much as 807 o in ground control data would be realized by combining 
the precise vertical photography with the electronic surveying system 
(Control Point Photography). The DoD is also convinced that the new aircraft 
with its unique innovations will greatly accelerate the process of map data 
acquisition. It is anticipated that compilation of data acquired by this 
new system will result in a significant savings in time, manpower and 
dollars. Time and experience will determine the full extent of these savings. 
In summary then, this new mapping concept will "jet propel" the surveyors 
laborious process of data acquisition by acquiring most of the control 
needed by the map maker along with the aerial photography. The precise 
vertical photography will also provide a short cut to map compilation which 
will elevate it to a new height of efficiency and production.