Don't send copies of boarding pass and tickets unless asked for it later.are you sure about this ? If I'm going to a country for a month and if I was in US for 1 hour (in another case) , I'' say US as destination? that will mean all my trips were to US cuz almost all the flight i took in these years were through US .
Would you send a copy of visas, boarding pass and tickets?
If you transfer flights in the US, you must first enter the US. You should remember that you actually went through US customs before taking the next flight. This means the US was the first destination of your travel. List all other destinations in the "Reason" field as requested in the calculator.