Tag Archives: Bacillus subtilis and underground surveillance

Underground Empires: Hamas v. Israel

Senior members of Hamas’s leadership in exile met in Doha, Qatar, earlier in February 2024 amid concerns that its fighters were getting mauled by an Israeli offensive in the Gaza Strip. Enemy troops were killing dozens of militants each day as they methodically overran Hamas strongholds. Then a courier arrived with a message from Yahya Sinwar, the head of Hamas in Gaza, saying, in effect: Don’t worry, we have the Israelis right where we want them.  Hamas’s fighters, the Al-Qassam Brigades, were doing fine, the upbeat message said. The militants were ready for Israel’s expected assault on Rafah, a city on Gaza’s southern edge. High civilian casualties would add to the worldwide pressure on Israel to stop the war, Sinwar’s message said, according to people informed about the meeting… 

Hamas fighters are now trying to avoid large firefights and instead use small-scale ambushes—using tools ranging from rocket-propelled grenades to recorded voices of hostages to lure Israeli troops into traps.  The ambushes have little chance of holding territory against Israel’s armored maneuvers. But they’re tailored to Hamas’s limited capabilities…Many in Israel’s military, from senior commanders to ordinary soldiers who spoke to The Wall Street Journal, worry that their accumulation of tactical wins on the battlefield might not add up to a lasting strategic victory. After nearly five months of intense fighting, Israel is still far from its declared war aim of eliminating Hamas as a significant military and political entity. “Fighting the enemy is like a game of whack-a-mole,” said an Israeli reservist in Khan Younis with the 98th Division….

Degrading Hamas’s capabilities is a realistic goal for Israel’s military, said Hussein Ibish, a scholar at the Arab Gulf States Institute, a think tank in Washington. But sustaining it would require fully occupying Gaza, which would give Hamas a target for a never-ending insurgency, he said. “Recent history shows that you can be an effective insurgency on a shoestring,” said Ibish. “Anyone can make an IED,” or homemade bomb, he said. “It’s easy to get a pistol. If you’re willing to die, you can kill soldiers.” 

Hamas… has shifted to hit-and-run attacks by tiny groups of two or three men, sometimes just one individual….Other Hamas ambushes use so-called sticky bombs, improvised explosives that attach themselves to Israeli armored vehicles with magnets or duct tape.…Hamas also tries to kill Israeli troops by putting booby traps in buildings throughout Gaza, many Israeli soldiers say. Booby traps have been widely found in the homes of Hamas operatives, but also in many civilians’ homes, Israeli soldiers said. Early on the explosives were placed around the buildings’ entrances. The Israelis soon stopped using the front door, instead blasting or bulldozing their way through the walls of a house. Hamas has adapted, placing explosive traps in items inside buildings, from gas storage balloons to children’s’ toys, Israeli soldiers said….In other cases, Hamas used voice recordings of hostages begging for help in Hebrew to try to draw soldiers into an ambush…

The Israelis have made only partial progress in finding and destroying Hamas’s vast tunnel network. Israeli officials now estimate that Hamas built around 350 miles of tunnels under Gaza, which is less than 30 miles long and up to 8 miles wide. There are thought to be several hundred tunnels under Khan Younis alone, which occupies an area roughly the size of the Bronx in New York…Hamas uses the tunnels as military headquarters, to maneuver across the enclave’s cities, protect its leaders, hide Israeli and other hostages, manufacture weapons and conduct hit-and-run attacks. The tunnels also contain a fixed-line phone system that Hamas used to communicate earlier in the war, along with walkie-talkies, burner SIMs and satellite phones. But with Israel hacking into those systems, the militants have increasingly shifted to using runners to convey verbal or written messages. 

The Israeli army has found no systematic solution for finding and destroying Hamas’s tunnels, many soldiers said. Tunnel entrances have been found in homes, schools, mosques, courtyards, streets and farm fields. Some are covered by steel doors, others by mattresses in a home. Israeli forces have mostly relied on drones and robots to search tunnels, only sending soldiers in later to avoid firefights in the narrow passages.

Excepts from Marcus Walker, Why Hamas Thinks it Still Could Win the War, WSJ, Feb.29, 2024

How to Detect Humans Under-the-Ground: Surveillance Best

Tunnel-digging in times of conflict has a long history. These days, secret tunnels are used to move weapons and people between Gaza and Egypt, and by Kurdish militia operating on the frontier between Syria and Turkey. But the same principle applies. What happens underground is hard for the enemy to observe. Digging for victory is therefore often a good idea…

That, though, may be about to change. Real-time Subsurface Event Assessment and Detection (RESEAD), a project being undertaken at Sandia National Laboratories in New Mexico, uses novel sensors to make accurate maps of what is happening underground. This will, no doubt, have many civilian applications. But Sandia is principally a weapons lab…The sensors themselves are a mixture of accelerometers, which pick up vibrations, current detectors, which measure the electrical-resistance of rocks and soil, and subsurface radar…

Exactly how RESEAD sensors would be put in place in a zone of active conflict remains to be seen. But the system could certainly be useful for other sorts of security. In particular, America has a problem with tunnels under its border with Mexico being used to smuggle drugs and migrants into the country. RESEAD would be able to detect existing tunnels and nip new ones in the bud. 

Excerpts from Tunnel Vision: How to detect the enemy when they are underground, Economist, June 24, 2021

How to Engineer Bacteria to Search for Underground Chemical Weapons: DARPA

U.S. military researchers asked in 2019 two companies to develop new kinds of biological sensors that can detect underground disturbances or the presence of buried chemicals or weapons.

Officials of the U.S. Defense Advanced Research Projects Agency (DARPA) in Arlington, Va., are looking to Raytheon BBN Technologies, and Signature Science, for the BioReporters for Subterranean Surveillance program.  This project seeks to use indigenous and engineered organisms to sense changes of interest to military commanders in natural and built environments. Raytheon BBN and Signature Science won separate $1.6 million contracts for the Subterranean Surveillance progam.

The two companies will perform laboratory research and proof-of-concept demonstrations of biological sensing systems in well- controlled field tests that take advantage of recent advances in microbial science and synthetic biology to develop biological sensors, signal transducers, and reporters that can reveal subterranean phenomena at a distance.  Bio Reporters should be able to sense a phenomenon at least one meter below the surface, propagate a signal to the surface within seven days, and be continuously detectable on the surface at a distance of 10 meters over the subsequent seven days.

DARPA researchers want Raytheon BBN and Signature Science experts to take advantage of the extensive biological networks that exist underground to monitor large areas to increase the military’s ability to detect subterranean events without the need for precise coordinates.

Excerpts from John Keller, Researchers eye new biological sensors to to detect underground objects like buried chemicals and weapons, https://www.militaryaerospace.com,  Nov. 6, 2019

In more detail  Signature Science and its partner, the Texas A&M University Center for Phage Technology, aim to leverage modern and synthetic phage biology and the straightforward molecular genetics of the harmless soil bacterium Bacillus subtilis to generate a new platform to recognize and report on specific chemical threats underground. The Spore-Phage Amplified Detection (SPADe) method, potentially extensible to explosives, radiation or physical disturbance sensing, seeks to substantially advance currently used techniques which rely heavily on manual soil testing.