At current levels NYSE:BA is offering a reasonable risk to reward to justify a long entry.
Even a swing trade to the previous swing high of $278, with a stop near $212 is a 1:3 risk to reward. However, I'm bullish in this stock, it's in the accumulation phase so it'll be a long-term investment as opposed to a short term trade. Thus, the risk:reward is irrelevant now as I expect the stock to trade beyond 300/share.