whois scanning your computer?

my firewall alerts me to attempts, most of the time i find it's China (netbar) but this is the latest from this morning. . .
You can check the ip at : http://www.dnsstuff.com/


OrgName: USMC Network Operations Center
OrgID: UNOC
Address: 3255 Meyers Ave
City: Quantico
StateProv: VA
PostalCode: 22134
Country: US

NetRange: 158.236.0.0 - 158.236.255.255
CIDR: 158.236.0.0/16
NetName: USMC2
NetHandle: NET-158-236-0-0-1
Parent: NET-158-0-0-0-0
NetType: Direct Assignment
NameServer: USMCDNS1.USMC.MIL
NameServer: BRAVO.USMC.MIL
Comment:
RegDate: 1992-04-08
Updated: 2006-04-13

OrgTechHandle: PLZ-ARIN
OrgTechName: Zampino, Portia L
OrgTechPhone: +1-703-784-2211
OrgTechEmail: *********@mcnosc.usmc.mil


grrr.
dp