I couldn’t wait until tomorrow 
Tried OS1.4.4 and it worked.
Many thanks!
Sorry it took so long for me to get back to this and perform a test. I can confirm that my Xenon will properly send data via LoRa if Particle Device OS version 1.4.4 or earlier is used. Device OS 1.5.0 will NOT work, resulting in the code never returning from the LoRa .send() command. I have updated my website with the testing code samples. Thanks to those who helped resolve this issue.
http://www.savvysolutions.info/savvymicrocontrollersolutions/particle.php?topic=particle-xenon
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