MARIETTA, Ga. (AP) _ Lockheed Martin could face a walkout this weekend at its Marietta plant, union officials said after an overwhelming vote for a strike.

Officials of Local Lodge 709 of the International Association of Machinists and Aerospace Workers, which represents 4,300 employees of the aircraft manufacturer, said 89 percent called for a walkout in voting Sunday. The rank and file also rejected a negotiated deal.

A company spokeswoman said today that Lockheed Martin is willing to try new talks with the union leadership.

``We're willing to sit down with the union and see what they have to say about,'' spokeswoman Susan Miles said. ``We're disappointed the employees didn't ratify the agreement. We negotiated in good faith for more than two months and there was a lot of give and take on both sides.''

The union was to present the strike vote and a five-day strike notice to the company today.

Union officials said 69 percent of the membership rejected a negotiated contract recommended by the leadership to replace a contract expiring today. The Machinists union represents a range of employees from clerical workers to highly skilled aircraft workers.

Lockheed Martin's plant just northwest of Atlanta manufactures the C-130J cargo plane and is the lead developer of the F-22 fighter. The company has been under pressure to cut costs.

The Marietta plant's primary line of business is the C-130J, an updated version of an airlifter that has been built in Marietta since the 1950s.

Plant management is under pressure to cut costs so that Lockheed Martin can offer the C-130J at reduced prices. Last year, plant executives ordered a complete retooling of the C-130J assembly line to cut costs. In January they laid off about 280 workers from various areas of the company.

The F-22 program is still gearing up, with only a handful of planes yet ordered. Recently, the plant won a contract for cockpit upgrades on older C-5 cargo planes, although the employment impact is slight. It also is bidding for a larger C-5 modification contract.