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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Jun. 28, 2019
Jun. 29, 2018
Mar. 29, 2019
Property, Plant and Equipment [Line Items]      
Number of days in fiscal period 364 days   364 days
FDIC coverage of deposits $ 250,000    
Recognition of stock option compensation expense $ 8,462 $ 2,798  
Commercial Electronic Markets [Member] | Sales Revenue, Net [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of sales     49.90%
Military Markets [Member] | Sales Revenue, Net [Member]      
Property, Plant and Equipment [Line Items]      
Percentage of sales     50.10%
Property, Plant and Equipment Other Types [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Useful lives of property plant and equipment 5 years    
Property, Plant and Equipment Other Types [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Useful lives of property plant and equipment 7 years