Tracy Province testified Monday that it took three months to plan the escape with John McCluskey, but only three minutes to accomplish it.
They sparked a nationwide manhunt when they escaped with the help of an accomplice from a medium-security prison near Kingman, Ariz. in 2010.
Prosecutors say the trio targeted Gary and Linda Haas of Tecumseh, Okla., at a rest stop near the Texas-New Mexico state line.
Province has yet to testify about the killings. He is expected to testify for as many three days.
McCluskey's defense attorneys indicated in a recent motion they intend to challenge Province's credibility.
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
The ice is keeping area emergency rooms busy as doctors treat patients for slip and fall injuries.
Through the First Baptist Church of Glenpool's Community Christmas Store, parents in need can pick from brand new, donated clothing and toys for their children completely free of charge.