The current vice-chief of the defense staff Lt.-Gen. Jean-Marc Lanthier announced last week that he would be stepping down from his position this summer. Only in the role for about a year, Lanthier was the fifth vice-chief in the past four years. Now, Lt.-Gen. Mike Rouleau will become the sixth, currently holding the position of commander of the Canadian Joint Operations Command. Once Rouleau takes over the vice-chief position Lt.-Gen. Christopher Coates will take his place with the joint operations command. Rouleau was previously a special forces commander, and pleaded guilty to misfiring his weapon while on the front lines in Iraq, leading to a $2,000 fine.