Boeing Co BA shares may be heading lower. Support has converted into resistance and sometimes this price action occurs just before a downtrend forms.This is why it is our Stock of the Day.Another factor to remember is the vote today (Thursday) by members of the International Association of Machinists and Aerospace Workers on a contract proposal that includes a 25% pay increase over four years. If rejected and two-thirds vote to strike, the work stoppage will commence on Friday at 12:01 a.m. PDT.The $163 lev ...