Quantitative easing is an expansionary policy where instead of buying short term securities in the market, the central bank (Fed) buys longer term securities. This will put more money into the economy as well as reduce interest rates due to the increased demand for the securities that the central bank creates.
With an increased supply of dollars relative to demand in the economy, the value of dollars will fall in value.
This is good for a U.S. based company as their goods will now become cheaper as they are denominated in dollars. As their goods ae cheaper, they will sell more goods abroad.
The USA army will only buy the best uniform from america because if they bought from india where anti military terrorists are at large. Therefore they could possibly place a detonation device in these which would result in death of soldiers for a uniform to be cheaper.