@legtod2, if you want to use the TRIGGERcmd Smart Home Alexa skill to turn on and turn off galculator, I'd recommend using the offCommand field like this:
{"trigger":"Open Calculator","command":"/home/pi/open_galc.sh","offCommand": "/home/pi/close_galc.sh","ground":"foreground","voice":"calculator","allowParams": "true"},Notice I set "allowParams": "true" which is necessary to use offCommand, but because you're using offCommand, your /home/pi/open_galc.sh command won't receive the on parameter.
Alternatively you could use one shell script that expects the on or off parameter like I did here.