Concentrations of Risk

12 Months Ended

Dec. 30, 2017

Ongoing credit evaluations of customers’ financial condition are performed and collateral, such as letters of credit, are generally not required. Customer’s accounts receivable balance as a percentage of total accounts receivable was as follows:



	Percent of Gross Accounts Receivable
Customer	December 30, 2017	December 31, 2016
Elbit Systems	*	21%
DRS Technologies	*	19%
Scott Safety	14%	18%
RealWear, Inc.	10%	*
U.S. Army	43%	*

Note: The symbol “*” indicates that accounts receivables from that customer were less than 10% of the Company’s total accounts receivable.

Sales to significant non-affiliated customers for fiscal years 2017, 2016 and 2015, as a percentage of total revenues, is as follows:



	Sales as a Percent of Total Revenue
	Fiscal Year
Customer	2017	2016	2015
Military Customers in Total	48%	24%	32%
Raytheon Company	*	*	18%
DRS Technologies	10%	*	*
Google, Inc.	*	*	22%
Rockwell Collins	10%	12%	*
Shenzhen Oriscape	*	20%	*
U.S. Army	12%	*	*
Funded Research and Development Contracts	11%	7%	12%

Note: The symbol “*” indicates that sales to that customer were less than 10% of the Company’s total revenues. The caption "Military Customers in Total" excludes research and development contracts.