<p>WASHINGTON (AP) - The two top security officials at Los Alamos National Laboratory have agreed to leave the lab after allegations of fraud and retaliation against a whistle-blower on their watch.</p>
<p>Security division director Stanley Busboom and his deputy, Gene Tucker, refused reassignment to lower-paying jobs at the lab but agreed to take a severance package and leave, said Bruce Darling, senior vice president at the University of California, which runs the lab.</p>