Montana Republican U.S. Senate candidate Tim Sheehy has made his business acumen a centerpiece of his campaign. But now that his aerial firefighting company is struggling with tens of millions of dollars of losses stretching three consecutive years, Sheehy’s business record could actually be undoing. The Washington Post reported Saturday that the U.S. Senate hopeful’s publicly traded enterprise — Bridger Aerospace — is in the midst of a “cash crunch” due to a relatively quiet wildfire season. According to filings with the Securities and Exchange Commission (SEC), Bridger Aerospace has already …