Standard Control/Signal Line HEMP Filters:
These filters comply with paragraph 4.6.1 of MIL-
PRF-15733 for visual and mechanical inspection
standards, and their capacitance meets method 305
of MIL-STD-202 at 1 kHz. Their insulation resistance
complies with paragraph 4.6.7 of MIL-PRF-15733
with the HEMP protection module removed, and
their dielectric withstanding voltage complies with
MIL-PRF-15733 with the HEMP protection module
removed. They also meet MIL-STD-220 requirements
for a standard insertion loss of 20 dB at 10 kHz and
80 dB at 10 MHz to 10 GHz.

High-Performance Control/Signal Line HEMP
Filters
These filters come with a voltage rating of 48 VDC
and 120 VAC between O and 60 Hz. They comply
with paragraph 4.6.1 of MIL-PRF-15733 for visual
and mechanical inspection standards and their
capacitance meets method 305 of MIL-STD-202
at 1 kHz. Their insulation resistance complies with
paragraph 4.6.7 of MIL-PRF-15733 with the HEMP
protection module removed, and their dielectric
withstanding voltage complies with MIL-PRF-15733,
paragraph 4.6.5 with the HEMP protection module
removed. They also meet MIL-STD-220 requirements
for high-performance insertion loss for 100 dB at 14
kHz to 10 GHz.

Vulnerability of Critical
Infrastructure
EMP events can disrupt or permanently damage
electrical components and systems within critical
infrastructure sectors--Industrial Control Systems (ICS),
large power transformers, network routers, traffic
controllers, and radio receivers/transmitters. EMPs can
also affect large-scale infrastructure--electric power
grids, communication networks, satellite networks, and
interstate pipelines. While EMP hardening standards
exist for military applications, they are sometimes
very costly and impractical for private-sector critical
infrastructure applications. Thus, alarmingly, private
sector efforts have fallen short of what's needed to
adequately address this threat, one that can affect the
entire nation.

Internet Breaches and Looting
While not completely disabling the internet, after
an EMP event ISPs would be unable to ensure the
confidentiality, integrity, and availability of data.
Government organizations at every level would be
unable to provide the most basic and essential services.
Telecommunications service would be_ interrupted
and data breaches would increase. Crime would also
increase as alarm systems and video surveillance would
be rendered inoperative. Banks, commercial retail,
and gas stations—heavily dependent on computers—
would be unable to execute transactions. This would
immobilize society as people would soon run out of
cash to buy what they need. Widespread looting would
ensue, especially for food and water.

We must conclude that an EMP threat is real and
probable, yet elusive as to when one would occur. An
ongoing, focused, and cooperative effort on the part
of our government, industry, and academic leaders is
essential. Spearheading this effort is the continued
advancement of EMP filter technology, which remains
critical if we are to survive and recover from such a
paralyzing and devasting event.