I'm in Toronto, Canada and booked a ticket on Saturday to Asia transiting through the U.S. with Japan Airlines for the first time. I got confused by the section where you fill out passenger information. The second part of the form for the U.S. asked for my middle name along with my family and first name which I gave. The section previous to this seemed to only ask for my family name and given name. Now, the e-ticket only shows my family name and first name, not including my middle name that appears on my Canadian passport. Now, I'm worried that I may have messed up filling the online form out. Will this be a concern at checkin or at the gate?