delayed stress reaction

Yes, cops are under stress and tension (though their jobs are far less dangerous than normally supposed).

While this reaction lasted he laughed away the evidence, and honestly believed he was exaggerating trifles.

Then it appears that the rebels delayed their attack until the arrival of their chief, hourly expected.

Ordinarily the diazo appears a little earlier than the Widal reaction—about the fourth or fifth day—but it may be delayed.

Coagulation is notably delayed in hemophilia and icterus and after administration of citric acid.

For Lettice—the tender woman of his first acquaintance—had obviously experienced a moment of reaction.