Consider the premise. Does the hypothesis stand independently without contradicting or following it? Premise: At 9:39, the NMCC's deputy director for operations, a military officer, opened the call from the Pentagon, which had just been hit. Hypothesis: The Pentagon was hit while on the call.
At 9:39, the NMCC's deputy director for operations, a military officer, opened the call from the Pentagon, which had just been hit.###The Pentagon was hit while on the call.