"Terrell's suggestion to hold Sergeant Sheila Estrada’s welcome-home celebration at a bowling alley went over like a lead balloon," said Cheryl. Terrell's suggestion is hard to comprehend because it's never been done before. Terrell's suggestion is as clever and unique as a balloon made out of lead. Terrell's suggestion sounds exciting at first but is actually empty. Terrell's suggestion would be a dismal failure as would a balloon made out of lead.

Terrell's suggestion would be a dismal failure as would a balloon made out of lead.

Explanation:

What the statement means is that Terrell's suggestion to hold Sergeant Sheila Estrada’s welcome-home celebration at a bowling alley would be a complete failure and disaster.

When something is said to have go like a lead balloon, it means that it would be a complete failure or disaster just like a balloon made out of lead which is a heavy metal, the balloon would not be able to fly.

technical documents should be clear and precise. basically, clarity is the key element in a successful technical document.