The December 3-7, 1990 Tri-Ada'90 Proceedings included a presentation by Lt. Col. James Ware of the U.S. Marine Corps on "Integrating Ada with Existing Systems: the ATACC Experience."
Grumman incorporated 217 KSLOC of existing FORTRAN and Pascal code with COTS and new Ada software. The system was scheduled to fielded in August, 1991.
You might contact Ware at (703) 640-2232 (last number I had for him in 1990).
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John J. Cupak, Jr., CCP Lockheed DECNet: MERVAX::CUPAK
Lockheed Sanders, Inc. Internet : cupak@rapnet.sanders.LOCKHEED.COM
95 Canal Street / NCA15-221 CompuServe : 72411,3176