BlackBerry job shuffles continue, says good-bye to COO and CMO

Big changes at BlackBerry(s bbry) continue: On Monday, the company announced that COO Kristen Tear and CMO Frank Boulben are leaving. BlackBerry recently replaced its CEO with John Chen following in the footsteps of Thorsten Heins, making for a full executive sweep of late. After watching its handset market share erode and failing to sell the company, Chen has his work cut out for him. There are no quick-fixes likely available, although the company is sure to continue pushing its services, even as large organizations consider alternatives: Earlier this month it was reported the Pentagon is distancing itself from using BlackBerry.