A health authority checks a mask as they test material flammability of Halloween goods, in Santiago, Chile, October 27, 2021. REUTERS/Ivan Alvarado 

A mask burns at a laboratory as part of an inspection of health authorities to test material flammability of halloween goods, in Santiago, Chile, October 27, 2021. REUTERS/Ivan Alvarado 

A mask is placed at a laboratory as health authorities test material flammability of Halloween goods, in Santiago, Chile, October 27, 2021. REUTERS/Ivan Alvarado 

A health authority checks a mask as they test material flammability of Halloween goods, in Santiago, Chile, October 27, 2021. REUTERS/Ivan Alvarado 

Laboratory workers burn a mask as health authorities test material flammability of Halloween goods, in Santiago, Chile, October 27, 2021. REUTERS/Ivan Alvarado 

Israeli soldiers are seen at the scene of a fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020. REUTERS/Amir Cohen TPX IMAGES OF THE DAY 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israeli soldiers try to extinguish fire during a fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/ Amir Cohen 

Israel soldiers try to extinguish fire in an area where Palestinians have been causing blazes by flying balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip August 21, 2020 REUTERS/Amir Cohen 

A police officer looks on as police and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis 

Police and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis 

Police and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis 

Police and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis 

Police and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis 

Police and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis 

olice and firefighting personnel move Molotov cocktails, flammable materials and liquids into a corner, inside the Hong Kong Polytechnic University (PolyU) in Hong Kong, China, November 28, 2019. REUTERS/Leah Millis REFILE - CORRECTING IDENTITY OF PEOPLE AND ACTION 

Balloons carrying flammable material are attached to a cutout of a drone as they are flown by Palestinian demonstrators to be sent to the Israeli side, during a protest calling for lifting the Israeli blockade on Gaza and demanding the right to return to their homeland, in the southern Gaza Strip October 19, 2018. REUTERS/Ibraheem Abu Mustafa 

A kite loaded with flammable material is flown by Palestinians to be thrown at the Israeli side, during a protest demanding the right to return to their homeland at the Israel-Gaza border, east of Gaza City August 3, 2018. REUTERS/Mohammed Salem 

Israeli firefighters attempt to extinguish a fire burning scrubland in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip July 20, 2018. REUTERS/Amir Cohen 

A kite loaded with a flammable material is flown by Palestinian demonstrators to be thrown at the Israeli side during a protest marking al-Quds Day, (Jerusalem Day), at the Israel-Gaza border, in the southern Gaza Strip June 8, 2018. REUTERS/Ibraheem Abu Mustafa 

A kite loaded with a flammable material is flown by Palestinian demonstrators to be thrown at the Israeli side during a protest marking al-Quds Day, (Jerusalem Day), at the Israel-Gaza border, east of Gaza City June 8, 2018. REUTERS/Mohammed Salem 

A kite loaded with a flammable material is flown by Palestinian demonstrators to be thrown at the Israeli side during a protest marking al-Quds Day, (Jerusalem Day), at the Israel-Gaza border, east of Gaza City June 8, 2018. REUTERS/Mohammed Salem 

A fire burns in scrubland in Israel near the Gaza Strip, in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable material across the border between Israel and the Gaza Strip June 8, 2018. REUTERS/Amir Cohen 

Israeli soldiers are seen near fire burns in scrubland in Israel near the Gaza Strip, in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable material across the border between Israel and the Gaza Strip June 8, 2018. REUTERS/Amir Cohen 

Israeli women look into binoculars as they scan the area for incoming kites and balloons carrying flammable materials on the Israeli side of the border between Israel and Gaza June 8, 2018. REUTERS/Amir Cohen 

An Israeli soldier shows a drone and a flammable material in a device which was connected to balloons, after it was intercepted by the drone in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone flown by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials, is pictured in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone flown by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials, is pictured in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone flown by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials, is pictured in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone flown by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials, is pictured in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone flown by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials, is pictured in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A flammable material which was connected to balloons burns after it was intercepted by an Israeli military drone, in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone controlled by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials, is pictured in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A kite flown by Palestinians, which was loaded with flammable materials, hangs on electricity wires in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A drone is flown by Israeli soldiers trying to intercept Palestinian kites and balloons loaded with flammable materials in an area where such devices have caused blazes on the Israeli side of the border between Israel and the Gaza Strip, near Kissufim, Israel June 5, 2018. REUTERS/Amir Cohen 

A tractor drives in a smoking field during a fire in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Nir Am, June 5, 2018. REUTERS/Amir Cohen TPX IMAGES OF THE DAY 

Palestinians prepare to fly a kite loaded with flammable material to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

Palestinians fly balloons loaded with flammable material to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

Palestinians prepare to fly a kite loaded with flammable material to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

Palestinians fly a kite loaded with flammable material to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

Palestinians prepare kites loaded with flammable material to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

Palestinians prepare kites loaded with flammable material to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

A kite loaded with flammable material is flown by Palestinians to be thrown at the Israeli side, near the Israel-Gaza border in the central Gaza Strip, June 4, 2018. Picture taken June 4, 2018. REUTERS/Ibraheem Abu Mustafa 

A firefighter attempts to extinguish a fire burning scrubland in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Nir Am, June 5, 2018. REUTERS/Amir Cohen 

A firefighter stands in burnt scrubland in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Nir Am, June 5, 2018. REUTERS/Amir Cohen 

A burnt tree is seen in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Nir Am, June 5, 2018. REUTERS/Amir Cohen 

People walk near smoking scrubland during a fire in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Nir Am, June 5, 2018. REUTERS/Amir Cohen 

A tractor drives in a smoking field during a fire in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Nir Am, June 5, 2018. REUTERS/Amir Cohen 

A kite is seen in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Be'eri, June 5, 2018. REUTERS/Amir Cohen 

Daniel Ben-David, a forestry official for Israel's Jewish National Fund (JNF), holds a kite found in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, on the Israeli side of the border between Israel and the Gaza Strip, near kibbutz Be'eri, June 5, 2018. REUTERS/Amir Cohen 

A feather is pictured in a burnt area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, across the border between Israel and Gaza Strip, near Sderot, Israel June 4, 2018. REUTERS/Amir Cohen TPX IMAGES OF THE DAY 

A burnt scrubland is seen in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, across the border between Israel and Gaza Strip, near Sderot, Israel June 4, 2018. REUTERS/Amir Cohen 

A burnt scrubland is seen in an area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, across the border between Israel and Gaza Strip, near Sderot, Israel June 4, 2018. REUTERS/Amir Cohen 

A feather is pictured in a burnt area where Palestinians have been causing blazes by flying kites and balloons loaded with flammable materials, across the border between Israel and Gaza Strip, near Sderot, Israel June 4, 2018. REUTERS/Amir Cohen