Pulse is effectively debt-free! Check out this media release from Dec 21, 2021:
https://www.globenewswire.com/news-release/2021/12/21/2356432/0/en/Pulse-Seismic-Inc-Announces-Renewal-and-Extension-of-Revolving-Credit-Facility.html
Pulse had debt of $28 million at end of 2020.
After a great year it had debt of $1.4 million on a $25 revolving credit facility at the end of 2021.