A. Call its key witness, McVeigh's former Army buddy Michael Fortier, who will offer vivid details of how he had helped plan the bombing with McVeigh as well as the time the two drove to Oklahoma City, where for half an hour, they walked around inside the Murrah building so McVeigh could case it.

A. Try to obliterate Fortier on cross-examination by attacking his credibility: Fortier has changed his testimony several times, initially telling investigators he knew nothing about the bombing and that he didn't think McVeigh was involved. Lawyers will paint him as a man who altered his story under government pressure in exchange for a plea bargain, in which the government agreed not to prosecute his wife and may reduce his own 23-year prison sentence for selling stolen weapons.

B. Call witnesses Eldon Elliott, Fred Skrdla, Tim Donahue, Marion Charles Ogden and Glynn Tipton, all of whom can give details that tie McVeigh to the bombing. For example, Eldon Elliot, the owner of a Ryder rental outlet in Junction City, will testify that a man calling himself "Robert Kling" rented the truck on April 14, 1995 and will identify "Kling" as McVeigh. Elliot will further testify that in filling out the rental agreement, McVeigh used a South Dakota driver's license. Laurie Fortier, Michael's wife, will then testify that she made the license for McVeigh.

B. Argue that none of the testimony comes from eyewitnesses who saw McVeigh assemble the bomb or park the explosive-laden truck next to the Murrah building, and argue that all the government's witnesses have been coached by the prosecution and that their identifications of McVeigh were influenced by the nationally televised "perp walk" when the suspect left the courthouse in Perry, Oklahoma.

C. Call to the stand Tom Kessinger, the mechanic who worked at the shop where the truck used in the bombing was rented. Kessinger's description of the customer who called himself Robert Kling led to McVeigh's being identified as a suspect.

This is an April 26, 1995 video image showing Michael Fortier of Kingman, Arizona. Fornier pleaded guilty to lesser charges in the bombing in exchange for testimony against Timothy McVeigh and Terry Nichols. CNN/AP

C. Hammer away at inconsistencies in Kessinger's testimony: Kessinger described a second man accompanying McVeigh, then seven months later changed his story to say that man was not with McVeigh. And recently, Kessinger announced that he was certain someone was with McVeigh but that he couldn't remember what he looked like. If his identification of the second man is so questionable, what about his identification of McVeigh? The lawyers may also argue that "John Doe No. 2" was the real culprit in the bombing.