Vice Admiral Toddman was a Starfleet flag officer assigned to Starfleet Security service branch. In 2371, he instructed Deep Space 9 commander Benjamin Sisko to put the USS Defiant on alert in case of a Jem'Hadar attack, following the launch of the Obsidian Order-Tal Shiar invasion of the Gamma Quadrant. He expressedly denied Sisko permission to pursue the fleet to rescue Odo and Elim Garak, but Sisko ignored Toddman's orders and went anyway.
As a safeguard, Toddman ordered Michael Eddington to sabotage the Defiant's cloaking device, with the goal of making it impossible for the Defiant to follow the fleet into Dominion space. However, Defiant chief engineer Miles O'Brien managed to repair the cloak much quicker than expected, and the Defiant was ultimately successful in rescuing both people.