Page:Iran Air Flight 655 investigation.djvu/111

 (5) [] - Intelligence Officer, CJTFME

i. COMAIR Schedules and routes were not plotted in Flag Plot but were available in the Operations Office.

3.. a. General

(1) The USS VINCENNES had onboard a current copy of the effective ROE for the Persian Gulf.

(2) The primary responsibility of the Commanding Officer under the ROE is the defense of his ship from attack or from threat of immenent attack. [Remainder of ROE deleted.]

4..

a. (u) At 030400Z Jul 88, the following environmental data existed:

(1) Wind Speed/Direction: 10Kts/340 degrees T

(2) Sea Temp: 30 degrees C

(3) Air temp: 28.3 degrees C

(4) Relative Humidity: 62%

(5) Evaporation Duct Height: 78.5 ft

(6) Surface Pressure: 998.0 MB

(7) Visibility estimate was 8-10 miles

(8) Ceiling: approximately 200 ft/scattered

b. Predicated on the environmental data provided from USS VINCENNES on 3 July 1988, which is summarized in [], Joint Electronic Warfare Center (JEWC) San Antonio, Texas, concluded the following as regards ducting:

(1) Atmospheric conditions suggest USS VINCENNES was operating with a strong surface based duct (extending up to approximately 485 ft) and also within an evaporation duct extending up to approximately 78 ft.

(2) AN/SPY-1 (AEGIS radar), AN/AWG-9 (F-14 radar) and AN/UPX-29(IFF) emitters show coupling with these ducts enhancing detection ranges.