In the end, when Jack is driving Zoe to the airport, they pass themselves like they did in the pilot. However, in this episode, Jack is driving the Sheriff's jeep, but in the pilot they pass themselves in the exact same car that they're driving. Though it should be noted that this discrepancy could be explained by the fact that they're in a different time line than from when they first arrived in Eureka.
At the beginning, when Zane and Jo are discussing their plans for the future, the same blonde woman in blue scrubs walks past them three times.
When Joe proposes to Zane, her Special Forces tattoo is gone.
When Director Fargo reads the revised memo, many typos can be seen on the memorandum no DOD secretary would write poorly. Department of Defense's watermark is on the headline, but Department of Defence is printed on several lines. Saturday, September 15, 2012 when most government agencies are actually closed for the weekend. "The following items listed below has been" when the plural word is have been.