Mr Robertson said the increase in security costs was due to a change in the international security situation and not being able to complete final planning until the competition schedule and design of the venues was known.
The company attributed increased costs to a combination of high inflation in Argentina and Chile, lower-than-expected contractor productivity, schedule extension and engineering, and planning gaps.
The Postal Service "will continue its planning for the August implementation of the new delivery schedule, while Congress debates, " spokesman Dave Partenheimer said Friday.
Such an approach would have yielded insights on how to optimize search, maximize the heuristics of the site for commerce, and pinpointed the content and schedule requirements of any follow-on CRM planning.