They're after me

I get a log from my broadband router providing me with all sorts of information regarding various suspicious contact that it stops from reaching my pc. Anyway, the past two days I've been getting a constant stream of this
UDP Packet - Source:7.12.12.16,13364    Destination: (My IP, port #). So, I looked up 7.12.12.16 to see who owned that IP. And, here's what I found:

OrgName: DoD Network Information Center
OrgID: DNIC
Address: 3990 E. Broad Street
City: Columbus
StateProv: OH
PostalCode: 43218
Country: US
NetRange: 7.0.0.0 - 7.255.255.255
CIDR: 7.0.0.0/8
NetName: DISANET7
NetHandle: NET-7-0-0-0-1
Parent:
NetType: Direct Allocation
Comment: Defense Information Systems Agency
Comment: DISA /D3
Comment: 11440 Isaac Newton Square
Comment: Reston, VA 22090-5087 US
RegDate: 1997-11-24
Updated: 1998-09-26

RTechHandle: MIL-HSTMST-ARIN
RTechName: Network DoD
RTechPhone: +1-800-365-3642
RTechEmail: **********@nic.mil

OrgTechHandle: MIL-HSTMST-ARIN
OrgTechName: Network DoD
OrgTechPhone: +1-800-365-3642
OrgTechEmail: **********@nic.mil
# ARIN WHOIS database, last updated 2006-03-23 19:10

I presume this is the work of a hacker who's "stolen" an IP address, but it's more exciting to think that the Department of Defense is tracking my online movements.