A method, comprising: transmitting command data from a transmission station via a first communication link to a receiving station that is remote from the transmission station, wherein the first communication link includes an optical fiber, wherein the command data defines one or more commands; transmitting triggering data from the transmission station via a second communication link to the receiving station, wherein the triggering data includes an identifier identifying at least one of the one or more commands in the command data to execute; wherein the second communication link transmits the triggering data using electromagnetic waves transmitted via skywave propagation; and wherein the first communication link has greater latency than the second communication link, wherein the first communication link has larger data bandwidth than the second communication link; further comprising: wherein the command data is defined by a collection of data with a first size, and the triggering data is defined by a collection of data with a second size, and the first size is greater than or equal to the second size; wherein the one or more commands include instructions to buy and/or sell one or more financial instruments; wherein there is at least one skip zone between the transmitting and receiving stations; wherein the skip zone is an area between a location where a ground wave from ground wave propagation is completely dissipated and a location where the first sky wave returns using sky wave propagation; and wherein the command data includes one or more directives, instructions, algorithms, and/or rules for controlling a machine to take one or more actions. transmitting command data from a transmission station via a first communication link to a receiving station that is remote from the transmission station, wherein the first communication link includes an optical fiber, wherein the command data defines one or more commands; transmitting triggering data from the transmission station via a second communication link to the receiving station, wherein the triggering data includes an identifier identifying at least one of the one or more commands in the command data to execute; wherein the second communication link transmits the triggering data using electromagnetic waves transmitted via skywave propagation; and wherein the first communication link has greater latency than the second communication link, wherein the first communication link has larger data bandwidth than the second communication link; further comprising: wherein the command data is defined by a collection of data with a first size, and the triggering data is defined by a collection of data with a second size, and the first size is greater than or equal to the second size; wherein the one or more commands include instructions to buy and/or sell one or more financial instruments; wherein there is at least one skip zone between the transmitting and receiving stations; wherein the skip zone is an area between a location where a ground wave from ground wave propagation is completely dissipated and a location where the first sky wave returns using sky wave propagation; and wherein the command data includes one or more directives, instructions, algorithms, and/or rules for controlling a machine to take one or more actions. wherein the command data is defined by a collection of data with a first size, and the triggering data is defined by a collection of data with a second size, and the first size is greater than or equal to the second size; wherein the one or more commands include instructions to buy and/or sell one or more financial instruments; wherein there is at least one skip zone between the transmitting and receiving stations; wherein the skip zone is an area between a location where a ground wave from ground wave propagation is completely dissipated and a location where the first sky wave returns using sky wave propagation; and wherein the command data includes one or more directives, instructions, algorithms, and/or rules for controlling a machine to take one or more actions.