Naval Base Coronado and NSWC - Corona Frequencies ?

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Hi

Why are the alpha tags for the Naval Base Coronado and NSWC - Corona using the Naval Weapons Station Seal Beach talkgroup site list. Is is because Naval Weapons Station Seal Beach share Frequencies with Naval Base Coronado and NSWC - Corona talkgroups. Why not it show the talkgroups for NSWC - Corona in the riverside section and Naval Base Coronado in the San Diego

Naval Base Coronado

DEC	HEX	Mode	Alpha Tag	Description	Tag
24001	5dc1	D	NBC PD Disp	Police Dispatch	Law Dispatch

Naval Surface Warfare Center Corona

DEC	HEX	Mode	Alpha Tag	Description	Tag
24247	5eb7	D	NSWCC PD DSP	Police Dispatch	Law Dispatch
24248	5eb8	D	NSWCC PD TAC1	Police Tac 1	Law Tac