Meet Our Team For trusted and reliable service, hire American Leak Detection of Northern Nevada Joanne Crawford Owner Joined ALD in August 201 Purchased business for the family. Retired from Raytheon Company in Dec. 2013 as a Certified Purchasing Agent after 34 years of service. John Crawford Co-Owner Joined ALD in August 201 Retired from Mobil Oil in Torrance, CA. Richard Shall Sr Technician/Supervisor Joined ALD in August 201 Richard is the Sr. Technician for our family owned business. Richard has over 20 years of construction abilities. Nicole Cerise Technician Joined ALD in August 201 Part of the family and is working as a team member and learning all the aspect of leak detection from Richard.