[0:20:04 - 0:20:11] diesel secondary systems. Critically in 1964 the Army Corp Engineers or COE proposed 12

[0:22:08 - 0:22:15] end quote. Alongside the US Army COE the US Navy is also deeply entwined with underground and possibly

[0:23:08 - 0:23:14] also assume some facilities were built before 1961 where the five-part Army COE document assumes