User talk:72.21.107.124

August 2018
Hello, I'm NCWP. An edit that you recently made to Hypersonic speed seemed to be a test and has been removed. If you want more practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks!  N C W P &#124; Talk 19:08, 30 August 2018 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.