Don't know about the Smiths Aerospace, but Yahoo doesn't have lotteries, alone or with someone else, they never have. It's a scam to get your bank account info so they can empty it. Just mark it spam and forget about it. They want to send you a check for your winnings, they want you to send them the transfer fees, guess what, the check bounces, and you get the overdraft charges. Which could empty your account. They get the winnings, you get to pay.