Thanks!
My Internet provider is Comcast so sometimes, I'm not sure of their limitations or ability, for that matter. ;-) It's my understanding, since OS X Lion 10.7.5 came pre-loaded, I can always use OSX Recovery, if needed so no bootable necessary. That said, Now, working on my MBP first, I've downloaded macOS Sierra 10.12.4 and just in case I need it, in the future, I tried to create a bootable usb in Terminal, as shown in the video link below as well as many others. However, it did not appear to work.
At the Terminal prompt, I entered the Command (sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyInstallerName --applicationpath /Applications/Install\ macOS\ Sierra.app) and hit enter, then entered my password, as requested but instead of beginning, Terminal looped back and gave me the original prompt, again. I hit Ctrl-C and closed out, then tried again but it still did not work. This time, when Terminal looped back to the original prompt, I re-entered the Command and hit enter. However, terminal did not request password but rather directly looped back to original prompt.
Any Ideas?
https://www.youtube.com/watch?v=GZVZeZhil3U