Boeing shares slipped on Monday as the planemaker grapples with an ongoing strike and a ballooning threat to its bottom line.  Chief Financial Officer Brain West, in a letter to employees, outlined the risks facing the company while also announcing a hiring freeze as well as a delay in pay hikes for salaried workers. Read his memo to Boeing's rank and file below.  Ticker Security Last Change Change % BA THE BOEING CO. 156.07 -0.69 -0.44% BOEING CEO'S CONTROVERSIAL HOME PURCHASE Memo to Boeing Employees Te ...