Efficiency testing never bothered me; in fact, some were thought-provoking situations and others downright funny. Referring to Jack Fuller’s comments, I recall one time he was conducting a test at an eastbound overhead signal near Crockett and the crew got by a red signal. When “interrogated” by Jack, the head-end crew emphatically stated that the signal was yellow. To Jack’s credit, he replicated the test at the same time on another day and found that the crew was correct; the signal did appear to display a yellow aspect because of the sun’s rays directly striking the signal head. In checking with the local signal maintainer, they found that the normal signal filter (sic?) used to prevent such occurrences was missing. The result was no discipline given the crew.