Tseng runs his fingers across a light gouge in the surface of his wooden desk, glancing to one of the floor-to-ceiling windows in his room. If one looks close enough and can catch the almost minute falters in his guard, they'd note an uncharacteristic anxious impatience in his behavior.
After a long moment he finishes the last of his stack of his paperwork he rises from his chair and heads to the elevator to find one of the areas similar to that given to SOLDIERs for sparring with the busters. As a Turk he spent most of his time with a gun in hand but it was still a welcomed respite to wield properly forged and tempered steel. He practiced often, mostly in solitude.
In any case, there was no harm in spending one's spare time in swordplay before a mission. If he was lucky he may even find a partner.