Cornerback Chris Cook was activated by the Vikings today after his eight-week stint on injured reserve because of a broken right arm.
The team also activated defensive end George Johnson from the practice squad. He's a third-year player from Rutgers.
The Vikings are hopeful defensive end Brian Robison (Grade 3 shoulder sprain) can play Sunday in Houston, but Johnson's activation would seem to be a signal that he might not.
Waived were tight end Allen Reisner and guard Mark Asper.
Dan reported Cook, who missed six games, would play on Friday here.
Mark Craig profiled the Cook situation this week. You can read that story here.