MIL-PRF-29612B, PERFORMANCE SPECIFICATION: TRAINING DATA PRODUCTS (31 AUG 2001)., This performance specification for training data products (See 6.5.38) establishes data requirements to support the life-cycle maintenance of training data products and is a source document for training (See 6.5.37) related Data Item Descriptions (DIDs). This specification may be used by contractors and the Government in establishing the training data requirements to be delivered.