@maxdancona,
You understand whatever you want to understand. Where in the passage does it say that Jesus will bomb anyone or anything? Man destroys man. Look at history.
Look at verse 10 again:;
10 But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything done in it will be laid bare.
When Jesus returns in "power and great glory" it will be a day of sorrow for those who have rejected God and His Son. The presence of God's Son coming on the clouds of heaven is an earth-shaking event. Think about it. The King of kings and Lord of lords will make Himself known. The earth itself, death, animals, humans, mountains, etc will stand back as the King of all the ages breaks through the clouds announcing His powerful return.