Late-night talk show host Conan O’Brien had some fun with Wal-Mart’s recently announced plan to hire 100,000 veterans by highlighting what it might be like if your former drill instructor was the first person to welcome shoppers into the store. A skit on TBS’s “Conan” shows a former Army drill sergeant wearing a blue smock “welcoming” shoppers as they walk in. But it seems the newly hired veteran forgot that working at a Wal-Mart was a little different than welcoming the newest crop of boots to recruit training. [HTML1] “Wal-Mart! Save money! Live better!” he yells in the face of one alarmed…