[She relaxes and he only tenses further, as if anticipating in advance that something else is bound to go awry. Good news can't be trusted for long, not in his experience. But he grunts in a more appropriate greeting, shrugging his shoulders. His version of a "hello".]

Happen at Admiral's whim. Can't be predicted. Aren't always based on personal opinions of suitability. Mostly seems at random.